Nature — France — NextOnTrip

Lac de Chambly

Doucier

Lac de Chambly is a small glacial lake in the commune of Doucier, tucked into the Hérisson valley at the heart of the Jura lakes region. Because the lake is privately owned and ringed by marshland, it has kept a wilder, quieter character than its more heavily visited neighbor, Lac de Chalain. Where is Lac de Chambly located? The lake lies in the Jura department, in the Bourgogne-Franche-Comté region, within the commune of Doucier. It sits in the Hérisson valley, between Lac de Chalain and the well-known Cascades du Hérisson waterfalls — the same short stretch of countryside that holds most of the region's best-known natural sights. The Hérisson river flows through the lake, feeding it and carrying water on toward the other lakes further down the valley. How big is the lake, and how was it formed? Lac de Chambly covers roughly 35 hectares, stretching about 1.1 km in length and 350 meters in width, with an average depth of around 10 meters. It is a glacial lake: its basin was carved out by a retreating glacier and later filled with water. Around its shores lies close to 60 hectares of wetland, thick with reeds and marsh vegetation. That fringe of marsh is what gives the lake its wild, somewhat secretive feel, and why it is often described as a hidden, less accessible corner of the valley. What can visitors do at Lac de Chambly? Lac de Chambly is privately owned, so swimming is not allowed and direct access to the shoreline is limited. On the estate bordering the lake, the Domaine de Chambly runs a Gîtes de France wooden chalet set within a 100-hectare property, offering accommodation and outdoor activities to its own guests. For most visitors passing through, though, the lake works best as a viewpoint and a walking destination — valued for its stillness and its close-up feel of untouched nature rather than for lakeside recreation. How do you get there, and what are the hiking options? Walking is the usual way to experience the area. A waymarked trail, the "Tour du Lac de Chambly" (route 18R, marked in red), circles the lake for about 12 km, giving views of the water through the trees and along the rocky edges of the valley. Hikers looking for a longer day out can follow a loop that links Lac de Chambly with Lac de Chalain and the Hérisson waterfalls — a route of several hours through rural valleys, past viewpoints, and alongside the cascades. Doucier is the most convenient starting point for either walk, and it also serves as the usual access village for the Cascades du Hérisson. Frequently asked questions Can you swim in Lac de Chambly? No. The lake is privately owned and swimming is not permitted. How is Lac de Chambly different from Lac de Chalain? Lac de Chalain is larger, publicly accessible, and equipped with beaches and tourist facilities, while Lac de Chambly is smaller, privately owned, and wilder, bordered by marshland and reeds. How long is the trail around the lake? The waymarked "Tour du Lac de Chambly" loop (route 18R) covers about 12 km. Is there anywhere to stay near the lake? Yes. The Domaine de Chambly, an estate bordering the lake, offers accommodation in a wooden chalet as part of the Gîtes de France network. What else is worth combining with a visit to the lake? Most visitors pair a walk around Lac de Chambly with a stop at Lac de Chalain and a walk along the Hérisson waterfalls, turning it into a full day out in the valley.

Lac du Poursollet

Livet-et-Gavet

Lac du Poursollet is a mountain lake in the commune of Livet-et-Gavet, in the Isère department of the French Alps. Sitting at roughly 1,650 metres above sea level at the foot of the Taillefer massif, it is ringed by fir forest and known for its deep, almost emerald-green water. The lake's quiet high-altitude plateau draws both families out for a short walk and seasoned hikers using it as a base for longer mountain routes. How do you get to the lake? A paved departmental road, the D114B, known locally as the "Route du Poursollet," climbs to the lake from the village of La Morte. A large free car park sits right at the shore, so reaching the lake by car requires no approach walk. The road is seasonal, however: it is closed through the winter months, typically from mid-November until the end of May, so the best window for a visit runs from June to October. Walkers can also reach the lake on foot from the hamlet of Les Clots above Riouperoux, also in the commune of Livet-et-Gavet, or from the villages of Oulles and Ornon via the GR 50 long-distance trail. What is there to do around the lake? Lac du Poursollet is a well-known starting point for hikes across the Taillefer massif, which forms the southern extension of the Belledonne range. From the lake, the GR 50 leads up onto a plateau dotted with smaller lakes, and more determined walkers can continue to the summit of Taillefer itself, at 2,857 metres the highest point of the massif. A shorter, family-friendly option follows the trail to the neighbouring Lac Fourchu, typically covered in a few hours round trip. For those after a bigger day out, a demanding loop links the peaks of Grand Galbert and Taillefer, with roughly 2,000 metres of cumulative elevation gain. The lake lies within a Natura 2000 protected area, set up to safeguard the fragile flora and fauna of the surrounding peat bogs and alpine meadows. As a result, a number of activities are restricted here: swimming, boating, lighting fires, camping, littering, letting dogs roam off-leash, and horse riding are all prohibited. Visitors are asked to keep to the marked paths. When is the best time to visit? Summer and early autumn offer the easiest access, with the road open and trails free of snow. Temperatures at this altitude stay noticeably cooler than in the valley below, making the lake a pleasant escape on hot days. Outside the main hiking season, the area also attracts snowshoers in winter, though the lakeside car park itself becomes inaccessible once the road closes. Frequently Asked Questions Can you swim in Lac du Poursollet? No. The lake falls within a Natura 2000 protected zone, so swimming, boating, and similar activities in the water are not permitted. Is the lake reachable by car? Yes. The paved D114B road runs from La Morte directly to a free car park at the lakeshore, so no hike is required to reach the water's edge. Is the lake accessible year-round? No. The access road closes for winter, usually from mid-November to the end of May. The recommended visiting period is June through October. What peaks can you reach from the lake? Trails from Lac du Poursollet lead to the summit of Taillefer (2,857 m), the highest point of the massif, to Grand Galbert, and to the nearby Lac Fourchu.

Lac Gentau

Laruns

Lac Gentau sits at 1,947 metres above sea level in the commune of Laruns, in the Pyrénées-Atlantiques department of southwestern France. Covering just under 0.1 km², it is the best-known and most easily reached of the Lacs d'Ayous, a small cluster of mountain lakes in the upper Ossau valley, part of the French Pyrenees. Where is Lac Gentau located? The lake lies in the upper reaches of the Vallée d'Ossau, above the village of Laruns, within the grounds of the Pyrenees National Park. The surrounding landscape is classic high-Pyrenean terrain — open pastures, rocky ridgelines, and, dominating the skyline, the twin-peaked silhouette of the Pic du Midi d'Ossau. On calm days that summit reflects in the still water, making Gentau one of the most photographed viewpoints in the range. How do you get there? Most visitors set out from the car park at the Bious-Artigues reservoir, following a signposted trail that climbs through forest and then open meadow toward the Lacs d'Ayous. Lac Gentau is the first and lowest of the group to be reached along this route. The moderate gradient and clear waymarking make it a popular half-day or full-day hike for both seasoned walkers and families looking for a manageable outing in the mountains. What else is there to see nearby? Right on the shore stands the Refuge Ayous, a mountain hut that opens in summer, offering meals and overnight accommodation to hikers continuing further into the range. From Gentau, paths lead onward to the other lakes of the Ayous group and further up the valley toward routes used to approach the Pic du Midi d'Ossau itself. The lake is fed by snowmelt and rainfall typical of this altitude, and its shoreline shifts slightly with the seasons, receding somewhat by late summer. When is the best time to visit? The hiking season in this part of the Pyrenees generally runs from June to September, when trails are clear of snow and the refuge is staffed. Outside these months, snow can linger on the higher sections of the approach, so checking current trail conditions before setting out is worthwhile. Frequently asked questions What is the elevation of Lac Gentau? The lake sits at 1,947 metres above sea level. How large is the lake? Lac Gentau covers an area of approximately 0.093 km². Is Lac Gentau the same as Lac Bersau? No. They are separate lakes within the Lacs d'Ayous group, situated at different points in the valley and at different elevations. Where does the hike to the lake begin? Most walkers start from the car park at the Bious-Artigues reservoir, near Laruns. Can you stay overnight at the lake? Yes, the Refuge Ayous, right on the shore, is open and staffed during the summer season. What is the view like from the lake? The distinctive twin summit of the Pic du Midi d'Ossau dominates the skyline and, in calm conditions, reflects in the water.

Lacs d'Arrémoulit

Laruns

Lacs d'Arrémoulit are a group of high-mountain lakes in the commune of Laruns, in the Pyrénées-Atlantiques department of France, at the head of the Ossau valley in the Pyrenees. Sitting at an altitude of 2265 m, with a combined surface area of just 0.11 km², they form a small but strikingly scenic cluster of tarns near the border with Spain. Where exactly are the lakes located? The lakes lie in the upper Ossau valley, inside a glacial cirque enclosed by the walls of the Palas (2974 m) and Arriel (2824 m) summits. This is a clearly distinct area from the better-known Ayous lakes (Lac Bersau, Lac Gentau), which sit in the same commune but in a separate mountain range further west — Arrémoulit lies further east, close to the Col d'Arrémoulit and the pass leading toward Spain. Their approximate coordinates are 42.8459 N, -0.3292 W. What does the surrounding landscape look like? The setting is classic high-Pyrenean terrain: bare granite walls, shattered rock faces, and patches of snow that can linger into summer. The water takes on a deep, distinctive colour, and the remoteness and quiet of the cirque draw hikers looking for genuine wilderness in the Western Pyrenees, away from the busier trails. How do you reach Lacs d'Arrémoulit? The usual starting point is the car park at Caillou de Soques, roughly 9 km up the valley from Gabas, at about 1400 m altitude. From there, the most common route crosses the Col d'Arrious: around 13 km with close to 900 m of ascent, typically taking about 4 hours one way. An alternative is a longer loop over the Col de Peyreget, which is more demanding — about 13.5 km, 1250 m of elevation gain, and roughly 7 hours of walking. Along the way hikers cross the Passage d'Orteig, a narrow rock ledge fitted with a security cable that looks more intimidating than it actually is to cross. Is there a refuge nearby? Right beside the lakes, at 2305 m, stands the staffed Refuge d'Arrémoulit, part of the FFCAM network. It serves as a natural base both for day hikers and for those continuing on toward the Spanish border or down into the Arrens valley on the far side of the massif. The refuge's opening season depends on snow conditions and generally falls within the summer months. Who is this destination suited for? Given the altitude, the absence of any road access, and the demanding approach, Lacs d'Arrémoulit is best suited to hikers with solid fitness and proper gear who value the silence of a high glacial cirque over easily reached viewpoints. It is also a well-known stage on longer treks across the Western Pyrenees, close to the passes marking the Spanish frontier. FAQ Are Lacs d'Arrémoulit the same as the Ayous lakes (Bersau, Gentau)? No. They are a separate group of lakes, sitting in a different mountain cirque, well to the east, closer to the Spanish border. How long does it take to reach the lakes? From the Caillou de Soques car park, the shortest route via Col d'Arrious takes about 4 hours one way. Can you stay overnight near the lakes? Yes — the staffed Refuge d'Arrémoulit (FFCAM), at 2305 m, sits right next to them. Is the route technically difficult? It requires good fitness and crossing the Passage d'Orteig, a cable-secured ledge that looks more daunting than it actually is. Are the lakes large? No — their combined surface area is only 0.11 km², making them small, intimate mountain tarns rather than expansive lakes.

Lac Bersau

Laruns

Lac Bersau is a mountain lake in the western Pyrenees, sitting within the commune of Laruns in the Pyrénées-Atlantiques department, inside the Ossau valley. Perched at 2,083 metres above sea level, it belongs to the well-known cluster of lakes referred to as the Ayous lakes, a scattering of glacial pools at the foot of the Pic du Midi d'Ossau, alongside neighbours such as Lac Gentau, Lac Roumassot and Lac de Casterau. Despite sitting close to these other pools, Bersau remains a separate body of water with its own footprint, tucked away from the busiest stretch of trail that runs past the more visited lakes in the group. Where exactly is the lake? Lac Bersau sits at coordinates 42.8392 N, -0.4947 W, inside a glacial cirque in the Ossau valley, directly below the Pic du Midi d'Ossau, whose 2,884-metre summit dominates the skyline and stays in view for most of the approach. The surrounding terrain is classic high-Pyrenean scenery: rocky ridgelines, open pastures once grazed by mountain flocks, and glacial boulders scattered across the slopes. How big and how deep is it? The lake covers roughly 0.125 km², a little over 12 hectares of surface water. Its maximum depth reaches 30 metres, which is notably deep for such a modest surface area and reflects the glacial origin of the basin it fills. How do you get to Lac Bersau? The standard approach starts in Pau, following the N134 to Gan and then the D934 towards Laruns. From Laruns the road continues toward the Col du Pourtalet as far as Gabas, where a turn leads to the car park at Lac de Bious-Artigues, sitting at 1,422 metres. This car park is the starting point for the popular loop hike that strings together the Ayous lakes. The path climbs past Lac Gentau on its way to the Refuge d'Ayous, while Lac Bersau lies just off this main route, which keeps visitor numbers noticeably lower than at the more exposed lakes along the direct path. What else should hikers know before setting out? Given the altitude — above 2,000 metres — the practical hiking season is largely limited to summer, from around June or July through September, once snow has cleared from the higher stretches of trail. The area sits among the most recognisable landscapes of the Ossau valley and borders the Pyrenees National Park, which helps explain the largely untouched character of the surroundings: open mountain pasture, bare rock ridges, and small glacial lakes set beneath high peaks. Frequently asked questions Is Lac Bersau the same lake as Lac Gentau? No. They are two separate lakes within the same Ayous group, close to one another but distinct in size, depth and position along the trail. How long does it take to reach the lake? The hike starts at the Bious-Artigues car park (1,422 m) and continues through the chain of Ayous lakes; given the climb to over 2,000 metres, it is worth planning for a full day out. Is there anywhere to stay overnight near the lake? The Refuge d'Ayous, along the trail linking the Ayous lakes, serves hikers visiting this part of the valley. Is it worth visiting Lac Bersau if it's less well known than its neighbours? Yes — sitting off the main path means fewer people and a quieter atmosphere than at the more popular lakes in the same group.

Lac de Bage

Canet-de-Salars

Lac de Bage is a small reservoir lake on the Lévézou plateau, in the commune of Canet-de-Salars, in the Aveyron department of southern France. Sitting at an elevation of 715 metres, it covers roughly 0.53 square kilometres, making it one of the more modest and quiet bodies of water in a region dotted with dammed lakes built along the rivers of the Lévézou. Where exactly is Lac de Bage? The reservoir lies in the middle of Lévézou, an upland area of Aveyron famous for larger lakes such as Pareloup and Pont-de-Salars, which draw visitors looking for open-air recreation away from crowded coastlines. Lac de Bage sits at approximately 44.2614°N, 2.7261°E, surrounded by a rural landscape of pastures, stone farm buildings and the gently rolling terrain typical of the plateau. Can you fish at Lac de Bage? Yes, and it is a lake well regarded among local anglers. It falls under second-category fishing waters, and fishing is permitted year-round. The lake holds perch, pike, zander, roach and rudd, and its clear water together with easily accessible banks make it a comfortable spot even for less experienced fishermen. One point to keep in mind: from the first Monday of April to the second Friday of June, temporary protected zones are enforced in the Intrans and Trappes coves, marked with buoys, to safeguard fish during the spawning period — fishing is suspended there for that window. Is swimming or boating allowed? No. Swimming and any form of boating, including float tubes, are prohibited on Lac de Bage. The lake functions primarily as a water reservoir and fishing spot rather than a bathing area, which sets it apart from larger lakes in the area, such as the nearby Pont-de-Salars lake, where supervised beaches operate during summer. What else is there to do nearby? Even without swimming access, the surroundings are well suited to walking. Paths along the banks and across the neighbouring hills give views over the calm water and the wider Lévézou scenery of open pastures, stone walls and scattered stands of trees. It makes a worthwhile short stop on a longer route through Aveyron's lake district, particularly for travellers who value quiet over built-up tourist facilities. How do you get to Lac de Bage? The lake lies within the commune of Canet-de-Salars, close to the town of Pont-de-Salars, in the central part of the Aveyron department. The Lévézou plateau is reachable via local roads from Rodez, the departmental capital. Given its modest size, Lac de Bage is best explored on foot or as one stop on a driving route linking several of the Lévézou lakes in a single day. FAQ How big is Lac de Bage? The lake covers approximately 0.53 square kilometres. What is the elevation of Lac de Bage? It sits at an altitude of 715 metres. Is there a supervised beach at Lac de Bage? No, swimming is prohibited here; visitors looking for a beach should head to the nearby Pont-de-Salars lake instead. What fish live in Lac de Bage? Perch, pike, zander, roach and rudd. Is fishing allowed all year? Yes, except for temporary protected zones in the Intrans and Trappes coves each spring, from the first Monday of April to the second Friday of June.

Lac de la Masse

Saint-Martin-de-Belleville

Lac de la Masse is a small high-altitude lake in the municipality of Saint-Martin-de-Belleville, in the Savoie department, Auvergne-Rhône-Alpes region of France. It sits in the Belleville valley, one of the three valleys that make up the famous Les Trois Vallées ski area alongside Val Thorens, Les Menuires and Méribel. This is a spot for travelers who want genuine high-mountain wilderness away from the busiest trails. Where exactly is Lac de la Masse? The lake lies at roughly 2,650 metres above sea level, just below the Pointe de la Masse (2,804 m) — the highest point of Saint-Martin-de-Belleville's territory and one of the signature panoramic summits of Les Trois Vallées. The surrounding terrain is classic high-alpine landscape: bare rock, alpine pasture, and several other small lakes within a few hundred metres. How big is the lake? Lac de la Masse is genuinely small: about 75 metres long and 35 metres wide, covering just under 2,400 m² (0.236 hectares). It reads more like a mountain tarn than a lake in the everyday sense, and it's precisely that intimate scale and isolation that give it its appeal. Where does the water come from, and where does it go? Lac de la Masse is the source of the Torrent du Lou. Downstream, its waters merge with flows from the Grand Lac de Montfiot and Petit Lac de Montfiot before reaching Lac du Lou, a larger and better-known lake in the same valley. The whole system eventually feeds the Doron de Belleville, the main watercourse of the valley. How do you get to Lac de la Masse? The Lou valley, where the lake sits, is one of the best-preserved corners of the Belleville valley — free of ski lifts and pistes in summer. The waymarked "Sentier des Lacs" trail network passes nearby, running past Lac du Lou and the Montfiot lakes, but reaching Lac de la Masse itself typically means leaving the main ridge route near Pointe de la Masse and descending off the marked path. This is a route for experienced, well-oriented hikers rather than a casual family walk. Saint-Martin-de-Belleville itself has more than 70 marked hiking trails, so the lake can easily be combined with a longer loop through the surrounding lakes. What else is worth seeing nearby? The closest landmark is Pointe de la Masse (2,804 m), reachable directly in summer by gondola from Les Menuires — the ride takes under eight minutes and climbs about 1,000 metres of elevation — leading to a viewing platform with a 360-degree panorama over the Trois Vallées peaks. It's also worth visiting Lac du Lou and the Grand and Petit Lac de Montfiot, which together form a popular lake-hopping loop in the Lou valley. Frequently asked questions Can you reach Lac de la Masse without hiking? No. The gondola from Les Menuires takes visitors up to Pointe de la Masse, but the lake itself sits lower down and in a different direction — reaching it requires walking, partly off the marked trail. Are there ski lifts or pistes here in summer? The Lou valley, where the lake lies, is deliberately kept free of summer ski infrastructure, which is one reason it has retained its wild character. What other lakes are nearby? Lac du Lou, Grand Lac de Montfiot and Petit Lac de Montfiot all sit close by and are fed by the same stream system as Lac de la Masse. When is the best time to visit this area? Given the altitude (around 2,650 m), the area is realistically accessible only in summer, once the trails are clear of snow — it's worth checking local conditions before setting out.

Lac de Puydarrieux

Puydarrieux

Lac de Puydarrieux is a man-made reservoir in the north-eastern part of the Hautes-Pyrénées department in southwestern France, straddling the communes of Puydarrieux and Campuzan, roughly fifteen kilometres north of Lannemezan. Built in 1987 on land once covered by an oak forest, it spans around 220 hectares and holds up to 14 million cubic metres of water. The lake is part of the Neste hydraulic system and was originally designed for irrigation, river flow support during dry spells, and drinking-water supply. Over time it has become known above all as one of France's premier birdwatching sites. Why is this lake so important for birds? Calm water, abundant food, and surrounding farmland have turned Lac de Puydarrieux into a major stopover on migratory routes. Close to 240 bird species have been recorded here, placing it among France's top ornithological sites, ranked third for migratory bird passage behind Lac du Der in Champagne and the Arjuzanx reserve in the Landes. Since 1989 the lake has held official status as a hunting and wildlife reserve under a ministerial decree, and in 2006 it was added to the European Natura 2000 network under the Birds Directive. Rare visitors recorded at the site include the white-tailed eagle, pink-footed goose, sociable lapwing, and golden eagle. What birds can you see in winter? The lake's best-known residents are its wintering common cranes. The first cranes settled on the shores of Puydarrieux in 1989, and the wintering population has grown steadily ever since. Each winter, from November to February, between roughly two and three thousand cranes arriving from Scandinavia stop here. Alongside them, visitors can spot great cormorants, gulls, lapwings, wild geese, ducks, and red kites circling overhead. Daily bird counts are carried out by the Hautes-Pyrénées departmental council's monitoring team, and the site takes part in the national crane-tracking network coordinated by the LPO (Ligue pour la Protection des Oiseaux). How can you explore the lake? Five observation points have been set up around the reservoir, including covered hides that keep visitors out of the birds' sight so wildlife behaves naturally. Along the southern shore, an interpretive trail features information panels covering local bird species, the history of the lake's creation, how the Neste water system works, and how the surrounding landscape has changed over time. A hardened 850-metre section with regular benches is accessible to visitors with reduced mobility. Four car parks and shaded picnic spots are available on site. When is the best time to visit? Crane-watching season runs from October to mid-February. During this period, guided ornithological walks are organised by prior booking, and every Friday afternoon from 3:30 pm until dusk a free observation session is open to everyone without reservation. Outside the winter season, guided walks can still be arranged by appointment. Frequently asked questions Is Lac de Puydarrieux a natural lake? No, it is an artificial reservoir created in 1987 for irrigation, river-flow support, and drinking-water supply. How many cranes winter at the lake? Roughly two to three thousand common cranes stop here each winter, between November and February. Is there an entrance fee? The Friday afternoon observation sessions are free and open without booking; themed ornithological walks require advance registration. Is the trail wheelchair accessible? Yes, an 850-metre hardened path along the southern shore is designed for visitors with reduced mobility. What protected status does the lake have? It has been a hunting and wildlife reserve since 1989, and since 2006 it has formed part of the Natura 2000 network as a Birds Directive protected area.

Lac du Cos

Le Haut-Bréda

Lac du Cos sits at 2,182 metres in the Belledonne massif, within the municipality of Le Haut-Bréda in the Isère department of the French Alps. Covering roughly 20 hectares, it ranks among the larger bodies of water in the Sept Laux (Seven Lakes) group, a cluster often described as one of the densest concentrations of high-altitude lakes anywhere in the French Alps, with more than a dozen named lakes scattered across the same plateau. Where exactly is the lake? The lake lies at the head of the Haut-Bréda valley, above the site of the former village of La Ferrière, now part of Le Haut-Bréda commune. Downstream and to the south-west sits Lac Cottepens, part of the same chain. From the shore, walkers get open views toward the Îlettes ridge and the Col de la Vache, while a rocky summit above the water — sometimes referred to locally as Le Toit or the Rocher du Lac du Cos, at 2,835 metres — dominates the skyline. How do you get there? The standard approach starts at Fond de France (1,087 m), the point where the D525a road up the Bréda valley from Allevard comes to an end and the trail network begins. From there, the path climbs through the Sept Laux plateau; depending on the exact route chosen, reaching the lake takes several hours and a substantial amount of elevation gain, and the hike is generally rated as demanding rather than easy. A second option approaches from Le Rivier d'Allemont (1,265 m), climbing around 900 metres of ascent in roughly three hours. This stretch of trail also forms part of the long-distance GR738 route. What is the setting like? Trails leading up to Lac du Cos cross classic high-alpine terrain, and chamois and ibex are a regular sight along the way. The lake stays frozen for a large part of the year, only opening up as the snow melts, which effectively narrows a sensible visiting window to summer and early autumn. Can you fish here? Like the other lakes on the Sept Laux plateau, Lac du Cos holds brook trout (truite fario). Fishing on lakes above 1,000 metres is typically permitted from the first Saturday of June through the second Sunday of October, subject to a minimum catch size (23 cm for most salmonids). Given how long and strenuous the approach is, anglers who make the trip treat a catch here as a reward earned the hard way. Frequently asked questions How high up is Lac du Cos? The lake sits at 2,182 metres above sea level, in the Belledonne massif. What's the best starting point for the hike? Most hikers begin at Fond de France, at the end of the D525a road from Allevard; an alternative approach starts from Le Rivier d'Allemont. Does the lake freeze over? Yes — it remains ice-covered for much of the year and is only fully accessible in summer. Are there fish in the lake? Yes, brook trout are present, and fishing follows the seasonal rules that apply to Isère's high-altitude lakes. What wildlife might you see nearby? Chamois and ibex are commonly spotted on the slopes surrounding the lake, typical of the high reaches of the Belledonne massif.

Lacs de Terre Rouge

Isola

Lacs de Terre Rouge is a cluster of five mountain lakes sitting at roughly 2,450 m above sea level in the commune of Isola, in the Alpes-Maritimes, just above the Isola 2000 ski resort. The lakes lie within the peripheral zone of Mercantour National Park, tucked into a quiet cirque enclosed by the granite walls of the Tavels massif and overlooked by Mont Malinvern, right on the Italian border. The name "Terre Rouge" ("red earth") comes from the strong rust-red tint of the surrounding rock. How do you get there, and where does the hike start? The trail begins near the Marano restaurant-hotel, on the small Rue Adrech de Barris in Isola 2000. From the top of the ski station, a service road leads toward the Hôtel Diva (2,070 m, waymark 90); after roughly 300 meters, a path breaks off to the left, marked 90a, heading straight for the lakes. Driving from Nice takes about one hour forty-five minutes; travelers without a car can take Lignes d'Azur bus line 92, a trip of around three hours. How long and how hard is the trail? The full loop covers about 8.4 km with an elevation gain of roughly 500 to 600 meters, translating into a four-to-five-hour round trip. It is rated a moderate hike — manageable for anyone with average fitness, but proper boots and preparation for changeable high-mountain weather are worth having. Along the way, walkers pass all five Terre Rouge lakes in succession before the trail climbs on to the Baisse du Druos pass, at 2,628 m. What is there to see along the way? From the Baisse du Druos, the view opens onto the numerous Lacs Supérieurs de Valscura on the far side of the ridge. The Terre Rouge lakes themselves sit within a stark, rocky high-alpine landscape, with the reddish stone that gave the site its name visible all around. The lakes are also stocked with trout and draw anglers during the summer season. Wildlife The surrounding slopes are home to alpine wildlife typical of the Mercantour, including chamois, mouflon, and ibex. Because the route runs through the park's peripheral zone rather than its core, dogs on a leash are permitted here — unlike in the central zone of Mercantour National Park, where they are banned outright. When is the best time to go? Given the altitude — above 2,400 m — snow lingers late into the season around Terre Rouge. The hike is best tackled in summer, from around June or July through September, once the trail is fully clear. Patches of snow can persist into early summer, especially on the higher stretch near the Baisse du Druos. Frequently asked questions Where exactly are the Lacs de Terre Rouge? In the commune of Isola, Alpes-Maritimes, within the Mercantour massif, directly above the Isola 2000 ski resort. How many lakes are there? Five lakes make up the Terre Rouge group, sitting at around 2,450 m altitude. Is the hike difficult? At about 8.4 km with 500-600 m of elevation gain, it's a moderate hike suited to anyone with reasonable fitness. Can I bring a dog? Yes — the trail lies in the peripheral zone of Mercantour National Park, where leashed dogs are allowed. Can you fish in the lakes? Yes, the lakes are stocked with trout and are a popular spot for anglers. Where does the trail start? At the Marano restaurant-hotel on Rue Adrech de Barris in Isola 2000, following the road toward the Hôtel Diva and then path 90a.

Lac de la Vogealle

Sixt-Fer-à-Cheval

Lac de la Vogealle sits at 2,001 metres above sea level inside the Cirque de Sixt-Fer-à-Cheval, one of the most dramatic natural amphitheatres in the French Alps, in the Haute-Savoie commune of Sixt-Fer-à-Cheval. The lake rests below the Dents Blanches range, whose summits climb to roughly 2,700 metres and are mirrored on calm days in the still water below. Its surface area shifts through the seasons, swelling with snowmelt in late spring and shrinking as summer wears on. Two glaciers, the Prazon and the Ruan, flank the basin alongside the rocky peak of Tenneverge, giving the setting a raw, high-mountain feel despite sitting fairly close to a marked trail. How do you get there? The starting point is the village of Sixt-Fer-à-Cheval, reached via the D907 road toward the famous Fer-à-Cheval rock amphitheatre. Cars are left in the parking areas beyond the hamlet of Nambride. During summer, driving past Nambride requires a small toll, collected during daytime hours, that goes toward maintaining trails and facilities inside the nature reserve. Which trail should you take? Two routes lead up from the car park. The first climbs via the Pas du Borêt, an exposed path with sections above steep drops, fitted with handrails, and best avoided in rain or fog. The second, roughly an hour longer, runs through Fond de la Combe and a spot known as Bout du Monde; it is technically easier and suits hikers who prefer solid ground underfoot over airy ledges. Either way, reaching the refuge from the car park typically takes about three hours and fifteen minutes. What is waiting at the lake? Just below the lake, at about 1,902 metres, stands the Refuge de la Vogealle, a mountain hut with roughly sixty beds, open from mid-June to the end of September. It serves as a natural stopover for food, rest, or an overnight stay, and for many visitors it is the goal of a long day trip in its own right. From the refuge, a short climb — steep at first, then nearly level — leads to the lake in around twenty minutes. The reward is a sheet of still water framed by the Dents Blanches and their glaciers, set against green alpine pasture in summer and sometimes dusted with early snow once autumn arrives. Who is this hike suited for? This is a full-day outing for hikers with solid stamina and experience walking several hours on mountain terrain. The Pas du Borêt option demands a good head for heights and steady footing, so the longer, gentler loop through Fond de la Combe is the safer choice in poor weather. An early start, plenty of water, and a close eye on the forecast are all worth planning for, since conditions inside the Fer-à-Cheval cirque can change quickly, especially in the afternoon. FAQ How high is Lac de la Vogealle? The lake sits at 2,001 metres above sea level, a short climb above the Refuge de la Vogealle. How long does the hike take? From the Nambride car park to the refuge is about 3 hours 15 minutes; the lake itself is another 20 minutes beyond the hut. Is the trail difficult? The Pas du Borêt route is exposed and fitted with handrails, requiring careful footing; the alternative via Fond de la Combe is technically easier but around an hour longer. When is the best time to visit? The hiking season runs roughly from June to September, matching the opening dates of the Refuge de la Vogealle, which makes it possible to split the trip over two days. Can you stay overnight near the lake? There is no lodging right at the lake, but the Refuge de la Vogealle, about 20 minutes below it, offers dormitory beds from mid-June through the end of September.

Flueseeli

Lenk

Flueseeli – a hidden mountain lake above Lenk in the Bernese Alps Flueseeli is a small alpine lake sitting at roughly 2,045 metres above sea level, tucked into a side valley above the village of Lenk in the canton of Bern, Switzerland. It lies at the very end of the Simmental valley, at the point where the road stops and the only way onward is on foot. Flanked by rock walls on one side and gentler slopes on the other, the lake stays hidden until the very last stretch of the climb — a moment many hikers describe as the real payoff of the trip. Where exactly is Flueseeli? The lake sits in the Bernese Alps at the foot of the Wildstrubel massif, above Lenk. Its approximate coordinates are 46.40964 N, 7.4988 E. It is worth noting clearly that this lake belongs to the Bernese Oberland region of Switzerland, not to France or any other country, despite occasional confusion with unrelated names found online. How do you get to Flueseeli? Most hikers start near the restaurant by the Simmenfälle waterfalls, where cars can be parked. From there, an alpine track leads toward Siebenbrunnen, the spot where the Simme river rises and gives the whole valley its name. Beyond that point the path steepens considerably, running along narrow, partly exposed sections that are secured with fixed ropes in places. This is no longer a casual stroll — it is a genuine mountain hike that calls for a reasonable level of fitness and comfort on exposed terrain. How long does the hike take and how demanding is it? The climb from Simmenfälle to Flueseeli typically takes around three hours one way, covering just under five kilometres with an elevation gain approaching a thousand metres. It ranks as a moderately to fairly demanding mountain trail, better suited to hikers with some experience than to casual walkers. Plan for a full day out and start early, especially in summer, when weather in the higher reaches of the Alps can turn quickly. Is there anywhere to stay overnight at the lake? Yes — on the northern shore of Flueseeli stands a small, unstaffed hut, the Fluhseehütte, run on a volunteer basis by a local association devoted to the lake. Accommodation is basic, with no catering or standard tourist facilities, but it allows visitors to spend a night surrounded by mountains, far from any crowds. Access to the hut, like access to the lake itself, is realistically limited to the summer months, once the trail is clear of snow and ice. What should you know before setting out? In summer, the meadows around the lake burst into green, flowering pasture, against which the water of Flueseeli takes on a striking, vivid colour. Many visitors call it a well-kept secret, still relatively unknown outside the circle of seasoned mountain hikers. Sturdy hiking boots, trekking poles, and enough water are essential — there are no supply points along the trail beyond the starting area at Simmenfälle. Frequently asked questions Is Flueseeli suitable for a family walk? Not for the full route — the final stretch is steep and partly rope-secured, which makes it difficult for young children or anyone without hiking experience. Is there a restaurant at the lake? Not directly at Flueseeli — only the simple overnight hut. The nearest restaurant is at the trailhead, near Simmenfälle. When is the best time to hike there? During the summer months, when the trail is fully passable and free of snow. Outside that window, reaching the lake can be considerably harder or simply not feasible. Is the trail well marked? Yes, the route from Simmenfälle via Siebenbrunnen to Flueseeli is signposted as a mountain trail and appears in regional hiking guides for the Lenk area.

Lac des Mines d'Or

Samoëns

Lac des Mines d'Or is a small lake in the Giffre valley, straddling the boundary between the communes of Samoëns and Morzine in Haute-Savoie. Sitting at 1,390 metres above sea level, it serves as a starting point for hikes heading toward the Swiss border. Where exactly is the lake? Lac des Mines d'Or lies right on the line between two communes, Samoëns and Morzine, which makes it a shared reference point for visitors moving between the two villages. Road access follows the Dranse de la Manche stream, and the lakeside has parking as well as a few restaurants. The surrounding landscape mixes mountain pastures, coniferous forest, and passes leading toward Switzerland. Why is it called "Mines d'Or" (Gold Mines)? The name recalls gold prospecting carried out in this part of the valley during the 19th century. The searches never developed into lasting mining activity, but the place name has stuck, and it is the only trace those attempts left on the landscape today. Is the lake natural? No — Lac des Mines d'Or is an artificial lake. It was created in 1981 on the initiative of the commune of Morzine, during road works that dammed an old wetland area. The basin was lined with a geomembrane to retain water from the surrounding streams, and the dike was reinforced in 2004 to stop water loss. The banks were planted with vegetation so the lake would blend into its surroundings. It measures about 150 metres in length, with a maximum depth of 5 metres. What can visitors do at the lake? Swimming is not allowed, but the lake attracts anglers — trout live in its waters — as well as hikers. The GR5 long-distance trail passes nearby, and from the lake it's possible to set off toward the Col de Coux, passing the Rouleau de Bostan rock formation and the Fréterolle pastures on the way to the pass on the Swiss border, near Champéry. Routes in the area range from an easy walk around the lake itself to longer mountain hikes. Frequently asked questions Can you swim in Lac des Mines d'Or? No, swimming is prohibited. The lake is mainly used for fishing and hiking. How do you get to the lake? By road along the Dranse de la Manche stream; there is parking on site along with a few places to eat. Is the lake natural? No, it is artificial, built in 1981 and lined with a geomembrane during road construction works. What trails start from the lake? The GR5 trail passes close by, and a route continues from the lake toward the Col de Coux, via the Rouleau de Bostan and the Fréterolle pastures, toward the Swiss border. Where does the name come from? From 19th-century gold prospecting carried out in this part of the Giffre valley.

Lac de la Muzelle

Les Deux Alpes

Lac de la Muzelle is a glacial lake sitting at roughly 2,105 metres above sea level inside the Écrins National Park, in the Vénéon valley, within the commune of Vénosc close to Les Deux Alpes (Isère, France). Its turquoise water covers around 9 hectares and reaches a depth of about 18 metres, lying directly beneath the sheer north face of the Roche de la Muzelle (3,465 m), whose small glacier still feeds the lake with meltwater. The surrounding area has carried natural-site protection since 1941, well before the national park itself was created in 1973. How do you get to the lake? The hike begins in Bourg d'Arud, a hamlet in the Vénosc commune reachable by road from Les Deux Alpes. From there the path climbs through forest and rocky steps, gaining roughly 1,200-1,260 metres over a round trip of about 13 km. Most walkers need six to seven hours there and back, and for nearly the whole distance the route overlaps with the GR54, the long-distance trail that circles the Écrins massif, known as the Tour de l'Oisans. There's no technical climbing involved, but the sustained elevation gain and rocky ground make this a serious full-day outing that calls for solid fitness and proper boots. Is there somewhere to sleep by the lake? Yes - right on the shore, at about 2,110 metres, stands the Refuge de la Muzelle, run by the French Alpine Club (FFCAM). It has 58 beds, and in summer, especially July and August, booking ahead is compulsory. The refuge is staffed daily from mid-June through the end of September, and on weekends from late May onward. It ranks among the most sought-after refuges in the whole Écrins range, thanks to both the setting and its position on the GR54. What else is there to explore nearby? Hikers looking to extend the day can continue past the refuge toward the Col de la Muzelle (2,613 m) - roughly two more hours of walking and another 500 metres of ascent, leading to a pass with views over the neighbouring valleys. Another option links Lac de la Muzelle to Lac Lauvitel via the Col du Vallon (2,531 m), closing a loop through the Vénéon valley. Views of the Roche de la Muzelle and the surrounding peaks accompany walkers along most of the trail. Frequently asked questions What's the best time to go? The trail is most accessible from June to September, once snow clears from the higher sections and the refuge is staffed every day. Is the hike suitable for children? With a distance in the double digits of kilometres and over 1,000 metres of elevation gain, this is a demanding outing better suited to experienced, active families than to a first mountain hike. Can you drive close to the lake? No - the road ends at Bourg d'Arud, and from there only a footpath continues. Is swimming allowed in the lake? The water comes from glacial meltwater and stays very cold even in summer, which keeps most visitors from lingering in it, though a few do take a dip.

Lac de Puy Vachier

La Grave

Lac de Puy Vachier is a mountain lake sitting at roughly 2,382–2,383 m above sea level, tucked into a rocky cirque within Écrins National Park, above the village of La Grave in the Hautes-Alpes. Where is the lake and how do you get there? La Grave itself sits at 1,450 m, at the foot of La Meije (3,984 m). The easiest way up to the lake is the Téléphériques des Glaciers de la Meije cable car, which stops at an intermediate station at 2,400 m. From there, a wide, recently upgraded path reaches the lake in under an hour — easy enough for young children and even mountain bikers. The lake can also be reached on foot from the valley floor, without the cable car. One route starts in La Grave near the arboretum and climbs through a scenic larch forest. A second, steeper and in places quite exposed trail begins at Les Fréaux. What's the view like on the way? The final stretch to the lake runs along a balcony trail above the Plateau d'Emparis, opening onto a panorama that takes in La Meije, the Aiguilles d'Arves, and the Trois Évêchés massif. What lives in the lake? The lake, set in a rocky basin, holds lake trout (cristivomer) — a salmonid species originally brought to France from Canada in the 1950s. What lies beyond the lake? A zigzagging path above the lake climbs to the Refuge Évariste Chancel, at 2,506 m, roughly half an hour further on. The refuge has 39 beds and sits on a terrace overlooking the Romanche valley and the village of La Grave below. A longer loop for experienced hikers Hikers looking for something more demanding can extend the outing into a loop that continues past the lake over the Brèche de Pacave (2,836 m) and the Peyrou d'Amont summit (2,859 m) before dropping back to La Grave. This is a considerably harder undertaking than the walk up from the cable car station and calls for solid fitness and experience in high-mountain terrain. Frequently asked questions How high up is Lac de Puy Vachier? The lake sits at approximately 2,382–2,383 m above sea level. How long does it take to reach the lake? From the cable car's intermediate station (2,400 m), it's under an hour of easy walking, suitable for children. Can you reach it without taking the cable car? Yes. On foot, the routes start either in La Grave via the arboretum and a larch forest, or from Les Fréaux on a notably steeper trail. Is there a mountain hut near the lake? Not directly at the lake, but about 30 minutes further and higher up stands the Refuge Évariste Chancel, at 2,506 m, with 39 beds. What fish live in the lake? Lake trout (cristivomer), a salmonid species introduced to French waters from Canada in the 1950s. Which national park is the lake part of? Lac de Puy Vachier lies within Écrins National Park.

Lac Bleu

Chamonix-Mont-Blanc

Lac Bleu is a small mountain lake in the Mont Blanc massif, sitting at 2,299 metres above sea level in the commune of Chamonix-Mont-Blanc (Haute-Savoie). It lies at the foot of the Aiguille du Midi, hemmed in by huge granite boulders, with clear water that stands out against the surrounding green alpine slopes. How do you get to Lac Bleu? The easiest approach is to take the Plan de l'Aiguille cable car, which arrives at 2,233 metres, and continue on foot for around 15 minutes along an easy path. This is the option most visitors choose, including families and anyone who wants to see a genuine alpine lake without committing to a long climb. The alternative is to walk up directly from the Chamonix valley without using the cable car. That route takes roughly 6 hours and involves about 1,300 metres of elevation gain, so it suits hikers who are prepared for a full day out in high-mountain terrain. What will you see at the lake? Lac Bleu is a small, intimate body of water tucked into a rocky hollow among massive boulders. Despite its modest size, it makes an impression thanks to its strikingly clear water and the raw high-altitude scenery around it. From the lake and along the approach path, you get views of some of the Mont Blanc massif's best-known rock spires — the Aiguille du Grépon, La Blaitière and the Grands Charmoz — as well as the Aiguilles Rouges range on the opposite side of the Chamonix valley. That combination of an easy walk and a genuine high-mountain panorama is a big part of why the short route from Plan de l'Aiguille is so popular with cable-car visitors. When is the best time to visit? The lake and the paths leading to it are only accessible seasonally, broadly from mid-June to early November; outside that window, high-altitude conditions such as snow and ice can make the approach difficult or impossible. It's worth checking the current Plan de l'Aiguille cable car schedule before your visit, since it determines the most convenient way to reach the lake. Frequently Asked Questions Do you have to hike from Chamonix to reach Lac Bleu? No — most visitors take the cable car up to Plan de l'Aiguille and then walk about 15 minutes to the lake. A full hike up from the valley floor is possible, but it is considerably longer and more demanding. How high up is Lac Bleu? The lake sits at 2,299 metres above sea level, just above the Plan de l'Aiguille cable car station at 2,233 metres. Is the route suitable for families with children? The short walk from the cable car station is easy and often recommended as a family outing. The full ascent from Chamonix, on the other hand, is a demanding full-day mountain hike. What views can you see from the lake? From around Lac Bleu you can see the distinctive rock spires of the Aiguille du Grépon, La Blaitière and the Grands Charmoz in the Mont Blanc massif, as well as the Aiguilles Rouges range across the valley.

Lac Blanc

Huez

Lac Blanc is a glacial lake in the commune of Huez, in the Isère department of the Auvergne-Rhône-Alpes region of France. Sitting in the Grandes Rousses massif at roughly 2,525-2,528 metres above sea level, it is one of the best-known hiking destinations around the Alpe d'Huez ski resort. The lake is protected as a classified site (site classé) within Isère because of its landscape value. Where is Lac Blanc and how do you get there? The lake stretches about 900 metres in length and 250 metres in width, covering a surface of roughly 13 hectares. It sits below Pic Blanc (also known as Pic du Lac-Blanc), the peak to its northeast that gave the lake its name. Water drains from the lake through the small Rif Brillant stream. Access runs across the same slopes used by the ski resort in winter, which turn into walking paths once the snow clears. The two most commonly used approaches come from the Tunnel des Grandes-Rousses to the northeast and from the Dôme des Petites Rousses to the northwest. The classic route starts directly from Alpe d'Huez and is a demanding, multi-hour climb with a substantial elevation gain, so it is worth setting aside a full day and starting early. Some visitors shorten the ascent by riding the lifts that operate during the summer season, cutting out the steepest section of the walk. What will you see at the lake? Lac Blanc sits at the heart of the Grandes Rousses massif and serves as a viewpoint over the Alpe d'Huez resort and the surrounding ridgelines. The contrast between the blue-turquoise water and the bare, high-altitude rock around it is the main draw for hikers and mountain bikers during the summer months. Several other lakes lie nearby, forming a well-known circuit of lakes around Alpe d'Huez, which means a visit to Lac Blanc can easily be extended into a longer loop that takes in multiple viewpoints in a single outing. Because the lake sits above 2,500 metres, it stays frozen or snow-bound for much of the year, and the paths around it are realistically only fully walkable during summer. When is the best time to visit? Summer, roughly from June to September, is the best window for a hike to Lac Blanc: the snow has usually cleared from the paths by then, and the days are long enough for a multi-hour climb and a safe return. In spring and early summer, patches of snow can still linger at the lake's altitude, which makes the walk longer and more demanding, while in autumn the weather high in the Grandes Rousses can change quickly, so it is worth checking the forecast shortly before setting out. In winter, the ground around the lake becomes part of the snow-covered Alpe d'Huez ski area and is not intended for hiking. Frequently Asked Questions How high up is Lac Blanc? The lake sits at around 2,525-2,528 metres above sea level, in the Grandes Rousses massif above Alpe d'Huez. How big is the lake? Lac Blanc is roughly 900 metres long and 250 metres wide, with a surface area of about 13 hectares. Where does the lake's name come from? It takes its name from the neighbouring peak, Pic Blanc (Pic du Lac-Blanc), which rises above the lake to the northeast. Can you reach the lake without a full-day hike? Yes — during the summer season, part of the ascent can be shortened by using the operating lifts, though the classic walking route from Alpe d'Huez remains a demanding, multi-hour outing.

Lac de Gers

Samoëns

Lac de Gers is a small mountain lake above Samoëns, in Haute-Savoie, part of the Auvergne-Rhône-Alpes region, sitting at the foot of the Grand Massif. It is one of the more popular hiking destinations in the area, combining a manageable approach with the kind of scenery typical of high-altitude tarns — open pastures ringed by rocky ridges. Where exactly is the lake? Lac de Gers lies in a side valley known as the Combe de Gers, at an altitude of a bit over 1,500 metres, not far from other well-known spots in this part of the Alps, including the Cascade du Rouget waterfall and the Gorges des Tines. Its coordinates are roughly 46.03 N, 6.73 E. The lake itself is modest in size, with a maximum surface area of around 6.5 hectares, and its water level shifts noticeably over the course of the year — the gap between high and low levels can reach roughly 2 metres, depending on snowmelt and rainfall. How do you get to Lac de Gers? There are two main ways to reach it. The classic approach is on foot, usually starting from the Pont de Lédédian car park, with a trail running through the Combe de Gers that takes several hours round trip depending on pace and fitness. The second, much shorter option uses the Télécabine du Grand Massif Express cable car: from its upper station, only a relatively easy, short stretch of walking remains to reach the lake, which makes the destination realistic for less experienced hikers and families with children. At one point the trail runs beneath the cable car line, so the two routes partly overlap. What is there to find at the lake? Right by the water stands the Refuge du Lac de Gers, a mountain gîte d'étape at roughly 1,533 metres, looking directly out over the lake. It offers rooms for 3 to 6 people, some with private bathrooms, along with meals served both to overnight guests and to hikers who stop only for lunch or dinner along a longer route. The refuge runs seasonally, typically from late May to late September, though the area also sees visitors in winter, when it becomes terrain for snowshoeing and ski touring. Who is this area suited to? In summer and early autumn, the Lac de Gers area draws hikers as well as mountain bikers, since the surrounding trails also form part of MTB routes running through the Grand Massif. In winter, once regular foot traffic around the cable car eases off, the terrain shifts toward ski touring and snowshoe outings, though reaching the lake at that time of year calls for proper experience and equipment. Frequently asked questions How high up is Lac de Gers? The lake itself sits a little above 1,500 metres, while the refuge overlooking it stands at around 1,533 metres. Can you reach it by cable car? Partly, yes. The Télécabine du Grand Massif Express shortens the approach considerably — from its upper station only a short walk remains, unlike the full hike from the Pont de Lédédian car park. Is it possible to stay overnight at the lake? Yes. The Refuge du Lac de Gers offers rooms for 3 to 6 people plus meals, and operates on a seasonal basis, mainly from late spring to early autumn. Does the lake's water level actually change? Yes, noticeably — the difference between high and low water can reach around 2 metres over the year, typical for a small lake fed largely by melting snow. Is the hike suitable for families with children? The cable-car option is considerably shorter and easier than the full walking approach, which is why it tends to be the choice for families and less experienced walkers.

Lac Bénit

Mont-Saxonnex

Lac Bénit is a small glacial lake tucked beneath the Bargy range, within the municipality of Mont-Saxonnex in the Haute-Savoie department. It covers roughly 4.1 hectares and sits at an altitude of around 1,450 metres, making it one of those mountain lakes that combine an easy approach with genuinely dramatic scenery. Where is the lake located? Lac Bénit lies in the Bornes massif, in the Auvergne-Rhône-Alpes region, right below the steep cliffs of the Bargy. The surroundings are classic alpine terrain - open pastures and grazing land give way to rocky ridgelines, and the basin holding the lake was carved out by an ancient glacier. The nearest base for visiting is Mont-Saxonnex, a village perched on the slopes above the Arve valley. Why is it called the "blessed lake"? The name Lac Bénit ("blessed lake") comes from a local legend. The story goes that long ago the lake overflowed and flooded a village lying below it. A bishop is said to have climbed up to the pastures, blessed the lake, and asked that the people of the valley be spared - throwing his episcopal ring into the water as a token of the request. Local belief holds that the ring still rests at the bottom of the lake to this day. Another tale circulating in the area concerns the Estampôyu, a huge, hairy creature said to live in two glacial hollows visible on the mountainside, guarding a princess of the Bargy it had supposedly abducted. What is the hike to the lake like? Lac Bénit is one of the more popular hiking destinations in this part of Haute-Savoie, largely because the walk suits a wide range of fitness levels. The full loop to the lake and back covers about 7.8 kilometres with roughly 480 metres of elevation gain, taking an average walker around three hours. Shorter approaches also exist, reaching the lake in as little as an hour and a half, which makes the outing manageable for families with children. The trail crosses pastureland and patches of forest before opening onto a view of the lake framed by the cliffs of the Bargy. What will you find once you get there? During the summer season, a small refreshment stand operates by the shore, giving hikers somewhere to rest after the climb. The lake itself, ringed by steep rock faces and mountain pasture, makes for a scenic spot to picnic or take a longer break partway through a walk in the Bornes massif. It also serves as a natural starting point for more demanding routes heading further up toward the Bargy ridge, for those looking for a tougher climb. When is the best time to visit? Late spring, summer and early autumn are the most suitable seasons for the hike, once the trail is clear of snow and the refreshment stand at the lake is open. In early summer the pastures around the lake turn a vivid green as the last snow melts, adding to the appeal of the walk. Frequently asked questions How big is Lac Bénit? The lake covers an area of roughly 4.1 hectares. At what altitude does the lake sit? Lac Bénit lies at around 1,450 metres above sea level, at the foot of the Bargy range. Where does the lake's name come from? According to legend, a bishop blessed the lake and threw in his ring after it flooded a nearby village, asking that the valley's inhabitants be spared. How long does the hike to the lake take? The full loop takes about three hours, though shorter routes reach the lake in around ninety minutes. Is there anywhere to eat near the lake? Yes, a small refreshment stand operates there during the summer season.

Lac de Servière

Orcival

Lac de Servière sits at roughly 1,200 metres above sea level on the territory of Orcival, right on the border with neighbouring Vernines, in the Puy-de-Dôme department of France's Auvergne region. Tucked into the Monts Dore range within the Auvergne Volcanoes Regional Nature Park, it is one of the more striking reminders that this landscape was shaped by fire long before it became a hiking destination. Why does this lake exist at all? Lac de Servière occupies a maar, a type of crater produced by a phreatomagmatic explosion. Rising magma met groundwater underground, and the sudden conversion of that water into steam blew out a crater rather than producing a typical lava cone. Over time, the depression filled naturally with water, leaving the lake seen today. It now covers about 15.5 hectares and reaches a depth of around 26 metres, making it a sizeable example of a maar lake for this part of the Massif Central. What makes the surrounding nature notable? A peat bog rings the water, hosting aquatic and marsh plant species that are rare and formally protected at a national level. This combination of volcanic origin, intact peatland and sensitive vegetation earned the site recognition as an Espace Naturel Sensible, a designated environmentally sensitive area. Swimming and open fires are both prohibited around the lake, a restriction aimed squarely at preserving that fragile balance rather than limiting visitors for its own sake. What hiking options are there? The easiest way to experience the lake is the loop path circling it directly: about 2 kilometres, roughly 40 minutes on foot, and gentle enough for families or a picnic stop by the water. Visitors after something longer can pick up a stretch of the GR30 long-distance trail, which continues toward Puy de l'Ouire. Along that stretch, the route opens onto views of the distinctive Roches Tuilière and Sanadoire rock formations, and on clear days walkers can pick out the Chaîne des Puys and the Sancy massif in the distance. That makes the lake a natural starting point for a fuller day of walking across Auvergne's volcanic plateau rather than just a short detour. Why is Orcival itself worth pairing with a visit? The commune that gives the lake its administrative home is best known for the Basilica of Notre-Dame d'Orcival, a Romanesque church that has functioned as a Marian pilgrimage site for centuries. Combining a stop at the lake with time in the village itself is an easy way to see two very different sides of this corner of Puy-de-Dôme in a single outing: raw volcanic scenery on one hand, centuries-old religious architecture at the heart of the village on the other. Frequently asked questions Can you swim in Lac de Servière? No. Swimming is banned to protect the surrounding peat bog and its protected plant life. How long does it take to walk around the lake? The loop trail is about 2 kilometres and takes roughly 40 minutes, an easy option for families. Is the lake really of volcanic origin? Yes — it fills a maar, a crater formed when rising magma hit groundwater and triggered a steam explosion, which later filled with water. How far is the lake from the village of Orcival and its basilica? The lake lies within Orcival's own commune, so the village and its Romanesque basilica are only a short drive away. Can the lake be used as a starting point for a longer hike? Yes. A section of the GR30 trail continues from the lake toward Puy de l'Ouire, passing views of Roches Tuilière, Sanadoire and the Chaîne des Puys.

Lac du Lauvitel

Le Bourg-d'Oisans

Lac du Lauvitel sits in the commune of Le Bourg-d'Oisans, in the Isère department, tucked inside the Écrins massif in the heart of the Dauphiné Alps. Perched at roughly 1530 metres above sea level in a side branch of the Vénéon valley, it is the largest lake in the entire Écrins massif, with a surface area close to 0.35 square kilometres and a depth approaching 70 metres — figures that make it something of a record-holder within Écrins National Park. Where is the lake located? The lake lies within the Auvergne-Rhône-Alpes region, inside the boundaries of Écrins National Park. Steep valley walls rise on all sides, and the lake is fed by streams draining down from the peaks above Bourg-d'Oisans, a town most visitors know as a gateway toward Alpe d'Huez and the higher reaches of the massif. How do you get there? The usual starting point is the small hamlet of La Danchère, from which a marked footpath leads up to the lake. The round trip covers about 7.5 kilometres with roughly 600 metres of elevation gain, making it a genuine mountain hike rather than a stroll, though still manageable for anyone in reasonable shape. Thanks to the scenery and a hiking time that's short by alpine standards, the walk to Lauvitel is regularly ranked among the standout routes in this corner of the Écrins. What makes the integral reserve so unusual? The southern shore of the lake and the valley floor beyond it form an integral nature reserve, established in 1995 — the first zone of its kind inside a French national park. Public access to this area is banned outright; it exists solely for scientific study of how a mountain ecosystem behaves with essentially no human interference. Researchers working there since 2013 have logged more than 3,000 species, including hundreds of beetle species, dozens of bee species, and around fifty bird species — a striking reminder of how much life a largely undisturbed alpine environment can hold. What lives in the water? The lake's water stays cold and well-oxygenated year-round, conditions that suit species needing a clean, unpolluted habitat. Brown trout and Arctic char, both introduced at some point for angling, are the fish most associated with Lauvitel today. The cold and clarity trace back to the lake's altitude and its glacial and spring-fed sources, far removed from any settlement or agricultural runoff. When is the best time to visit? Summer, from June through September, is the most reliable window, once snow has cleared from the higher sections of the trail and the path is fully passable. Earlier in the season, lingering snow patches and rockfall risk on the steeper stretches can make the route more demanding, so checking current notices from the national park before setting out is worthwhile. Frequently Asked Questions Can visitors enter the integral reserve around the lake? No. The southern shore and the valley floor have been off-limits to the public since 1995 and are reserved exclusively for scientific research. How long does the hike to Lac du Lauvitel take? The round trip from La Danchère is about 7.5 kilometres with around 600 metres of elevation gain — typically four to five hours including a break at the lakeshore for a reasonably fit hiker. Is swimming allowed in the lake? The water stays cold throughout the year because of the altitude and its spring-fed origin, so swimming isn't a typical draw here. What fish live in Lac du Lauvitel? The lake holds brown trout and Arctic char, both introduced in the past to support recreational fishing.

Lac de Bourdouze

Besse-et-Saint-Anastaise

Lac de Bourdouze is a small glacial lake in the commune of Besse-et-Saint-Anastaise, in the Puy-de-Dôme department of the Auvergne region. Sitting at around 1,150 metres above sea level in the Mont-Dore massif, it lies close to Puy de Sancy, the highest peak in Auvergne and in the entire Massif Central. The combination of volcanic scenery and a rare peat-bog habitat makes it one of the more distinctive stops for hikers exploring the Sancy area. How old is the lake, and how did it form? The lake dates back roughly 12,000 years, shaped as glaciers retreated from the region at the end of the last ice age. That glacial history is still visible on the ground: paths in the area cross a series of small, half-moon-shaped hollows and glacial cirques before reaching the Valbeleix plateau, which sits at a comparable altitude. The lake itself covers about 25 hectares and reaches a maximum depth of only 4 metres, making it a shallow but fairly wide body of water. A large part of its surface has since turned into peat bog, giving the area its marshy character and earning it protection as part of the Natura 2000 network. What wildlife lives here? The peat bog surrounding Bourdouze supports a notably rich mix of species. Great crested grebes can be spotted on the water, common frogs breed in the shallows, and dragonflies — including the black darter — are common around the reeds. Because the habitat is fragile, visitors are asked to stay on marked paths, avoid picking plants, and not disturb the wildlife. The site is jointly managed by a private landowner, a local farmer who grazes the surrounding meadows, and a fishing association, and access remains free for everyone. What can visitors do at the lake? Bourdouze draws both walkers and anglers. A designated fishing spot sits right on the shore, open to members of the local angling association. Because peat bogs cover part of the shoreline, there is no path circling the entire lake — walkers head out along one section and turn back rather than completing a loop. Swimming is not permitted. Hikers looking for a longer outing can extend the walk toward the nearby Lac de Montcineyre and the hamlet of Lignerolles, forming a loop of around 17 to 18 kilometres that takes five to six hours to complete. How do you get there? From Besse-et-Saint-Anastaise, take the D36 road toward Compains for about 7 kilometres; the lake is signposted and visible on the left-hand side. A car park sits right on the D36, from which an easy round trip of about an hour leads down to the water and back — a walk suitable for most fitness levels without special preparation. Frequently asked questions Can you swim in Lac de Bourdouze? No. Swimming is prohibited here to protect the peat bog and the fragile ecosystem surrounding the lake. Is there a trail that goes all the way around the lake? No. The peat bogs along parts of the shore make a full loop impossible, so the standard walk is an out-and-back route rather than a circuit. How close is it to Puy de Sancy? The lake sits within the same Mont-Dore massif as Puy de Sancy, Auvergne's highest summit, though reaching the peak itself requires a separate drive or hike. Can you fish at the lake? Yes, there is a designated fishing spot managed by the local angling association.

Lac de Montcineyre

Compains

Lac de Montcineyre is a crescent-shaped volcanic lake sitting at 1,182 metres above sea level in the commune of Compains, in the Puy-de-Dôme department of Auvergne. Formed by the eruption of the nearby Puy de Montcineyre volcano, it is one of the most distinctive bodies of water in the Chaîne des Puys — protected, quiet, and ringed by beech woodland. Where does the name come from and how did the lake form? The name Montcineyre traces back to the Latin "Mont Cineris," meaning "mountain of ash" — a direct reference to the site's volcanic past. Puy de Montcineyre is one of the youngest volcanoes in the Chaîne des Puys chain, estimated at under 6,000 years old, making it a geologically "fresh" feature on the Auvergne landscape. The eruption was unusually violent because rising magma made contact with groundwater. This contact, known as phreatomagmatism, triggered a powerful thermal shock and an explosive eruptive style. Evidence survives at the base of the volcanic cone as distinctive "cauliflower" volcanic bombs with a lobed, textured surface. Ash from the eruption has even turned up in peat bogs near Picherande and Chastreix, more than 10 kilometres from the crater — a sign of how forceful the event was. Lava and pyroclastic material blocked the outflow of a pre-existing depression of glacial origin. Water backed up behind this natural dam, creating a lake that took on a crescent shape mirroring the curve of the volcanic cone itself. How big is the lake, and what surrounds it? Lac de Montcineyre covers roughly 40 hectares and reaches a depth of somewhere between fifteen and twenty metres. Sitting at 1,182 metres, it is bordered by beech forest, giving the setting a distinctly calm, upland-woodland character. Its coordinates are approximately 45.467°N, 2.9°E. The land around the lake is protected for its natural value. That is one reason the area has kept its untouched character — no buildings, no beach facilities, just dense old-growth forest running almost down to the waterline. Can you swim, fish, or paddle here? No. Lac de Montcineyre serves as a drinking water reserve, which is why swimming, fishing, and any form of boating or paddling — kayaks, canoes, paddleboards — are strictly forbidden. The lake helps supply water to the Issoire area and the southern suburbs of Clermont-Ferrand, though in practice it acts as a backup source alongside the region's other water intakes. Because of this role, water quality and minimal human interference with the ecosystem are a priority for local authorities, and the restrictions are enforced strictly. For visitors, the takeaway is simple: Montcineyre is a place to look at and walk around, not for water-based recreation. What else is worth seeing nearby? Despite the ban on entering the water, the lake draws visitors for its views. From its shores and from the slopes of the nearby Puy de Montcineyre, there is a wide panorama over the Sancy massif — under the right light, the summit of Puy de Sancy is said to reflect on the water's surface, producing one of the more photogenic scenes in the region. Marked hiking trails circle the lake and can be combined with longer routes, including one heading toward Puy du Montchal. Access is via the village of Compains, roughly 55 kilometres from Clermont-Ferrand. Parking for visitors is available along the D8 departmental road. Frequently asked questions Can you swim in Lac de Montcineyre? No — the lake is a drinking water reserve, and swimming, fishing, and any form of paddling are completely forbidden. How did the lake form? It formed after the eruption of the Puy de Montcineyre volcano less than 6,000 years ago, when lava and volcanic debris blocked the outflow of a pre-existing glacial depression. How do you get to the lake? Via the commune of Compains, about 55 km from Clermont-Ferrand, with parking along the D8 road. What can you see from the shore? A panorama of the Sancy massif, and, in good light, the reflection of the Puy de Sancy summit on the water. How large and deep is the lake? About 40 hectares in surface area, with a depth of roughly fifteen to twenty metres, at an altitude of 1,182 metres.

Lac Chauvet

Picherande

Lac Chauvet is a small volcanic lake in the commune of Picherande, in the Puy-de-Dôme department of the Auvergne-Rhône-Alpes region of France. Sitting in the Monts Dore massif at roughly 1,176 metres above sea level, it lies within the Regional Nature Park of the Auvergne Volcanoes. It's the kind of place travelers come to for silence and raw volcanic scenery rather than crowds or facilities. What kind of lake is this, exactly? Lac Chauvet occupies a maar, a crater carved out by a phreatomagmatic explosion. This type of eruption happens when rising magma meets groundwater, a lake, or a stream — the sudden contact between molten rock and water triggers a violent thermal shock, blasting a deep, nearly circular hole into the surrounding rock. Over time, that crater filled with water to form the lake seen today. The eruption dates back to the Quaternary period; several sources place it around 15,000 years ago, toward the end of the last glaciation. One geological quirk is worth noting: the ring of ejected material typically found around a maar is largely absent here. Researchers believe it may have been scoured away by the glacier that covered this part of Auvergne at the time. Glacial moraine also partly filled in the crater basin afterward. How big and how deep is Lac Chauvet? The lake is almost perfectly circular, a direct legacy of the round explosion crater it fills. Its surface area is about 0.54 square kilometres, and it reaches several dozen metres in depth, making it disproportionately deep relative to its modest surface size compared with most lakes in the region. Its coordinates are approximately 45.460°N, 2.831°E. Forests and pastureland typical of the Monts Dore surround the shoreline, and the enclosed, crater-shaped basin gives the water a notably self-contained, almost hidden feel. Can you swim or fish here? This is the detail most visitors need before planning a trip: Lac Chauvet sits on private land, and swimming, fishing, and walking a full loop around the shoreline are all prohibited. The lake functions primarily as a scenic viewpoint and a destination for walks rather than a spot for water-based recreation. What can visitors actually do around the lake? Despite the restrictions on the lake itself, the surrounding area remains open to hikers. The starting point is the car park by the lake, from which marked trails head into the Montbert forest. A shorter, family-friendly loop covers about 7 kilometres, running mostly through woodland. A longer, more demanding route stretches just over 13 kilometres and leads to the Cascade de la Barthe waterfall, following a stream, crossing footbridges, and passing through beech forest and pastures along the way. It's a walk that ties together two of the region's natural landmarks — a volcanic lake and a forest waterfall — in a single outing. Frequently asked questions Is Lac Chauvet a volcanic lake? Yes. It occupies a maar, a crater formed by a phreatomagmatic eruption that later filled with water. Can you swim or fish in Lac Chauvet? No. The lake is privately owned, and swimming, fishing, and completing a full circuit of the shore are all forbidden. How do you get to Lac Chauvet? The starting point is the car park at the lake in the commune of Picherande, from which marked hiking trails begin. What else is there to see nearby? The longer hiking route (about 13 km) leads through the Montbert forest to the Cascade de la Barthe waterfall. Where exactly is the lake located? In the Monts Dore massif, in the commune of Picherande (Puy-de-Dôme), at an elevation of roughly 1,176 metres, within the Regional Nature Park of the Auvergne Volcanoes.

Nature in France

Lac de Chambly

Lac du Poursollet

Lac Gentau

Lacs d'Arrémoulit

Lac Bersau

Lac de Bage

Lac de la Masse

Lac de Puydarrieux

Lac du Cos

Lacs de Terre Rouge

Lac de la Vogealle

Flueseeli

Lac des Mines d'Or

Lac de la Muzelle

Lac de Puy Vachier

Lac Bleu

Lac Blanc

Lac de Gers

Lac Bénit

Lac de Servière

Lac du Lauvitel

Lac de Bourdouze

Lac de Montcineyre

Lac Chauvet

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