Nature — Switzerland

Lämmerensee

Leukerbad

Lämmerensee is a high-alpine lake above Leukerbad in the Swiss canton of Valais. It sits at 2,296 m on the Lämmerenalp plateau (Lämmerenboden), just beneath the Lämmerengrat ridge, and covers roughly 6.7 hectares. Where is Lämmerensee? The lake belongs to the municipality of Leukerbad and lies close to the Gemmi Pass, the historic crossing between the Rhône valley and the Bernese Oberland. Its coordinates are about 46.40° N, 7.59° E. The setting is an open, stony plateau well above the tree line, framed by rock walls and ridges. How do you get there? Start at the Gemmi Pass. From Leukerbad you can ride the cable car up or walk. From the pass, the trail rises gently along the Lämmerendalu valley onto the Lämmerenboden plateau, where the lake lies. Along the way you also pass the neighbouring Daubensee. The path then climbs on to the Lämmerenhütte (Swiss Alpine Club) at 2,507 m. The SAC grades the route T2 mountain hiking, with about 250 m of ascent and roughly 1.5 hours of climbing. The last stretch to the hut is steep, and the harder sections are protected with chains. Valais Tourism lists the full round trip from the Gemmi at around 9 km and over 3 hours. What is there to see? A glacier trail runs along the route towards the hut. The hut warden laid it out together with the University of Bern, and its panels explain how glaciers shaped the area. Ibex are sometimes spotted near the hut. For a longer day, return via the Rote Totz Lücke, the Rote Chumme and the Daubensee, which adds about 1.5 hours. When should you go? This is a summer hike, once the snow has melted. The winter route does not follow the summer path, so check current conditions with Leukerbad tourism before setting out. Weather above 2,000 m changes quickly: bring layers, sun protection and water. Frequently asked questions How high is Lämmerensee? It lies at 2,296 m above sea level, below the Lämmerengrat ridge. How big is the lake? Its surface area is about 6.7 hectares. Is the walk difficult? The stretch from the Gemmi Pass onto the plateau is gentle. Only the final climb to the Lämmerenhütte is harder (T2, with chains). Where does the hike start? At the Gemmi Pass, reached from Leukerbad by cable car or on foot.

Riffelsee

Zermatt

Riffelsee is a high alpine lake above Zermatt in the Swiss canton of Valais, sitting at roughly 2,757 m on the Riffelberg slope. On a windless morning its surface mirrors the Matterhorn almost perfectly, which makes it one of the most photographed spots in the Pennine Alps. How do you get to Riffelsee? Take the Gornergrat cog railway from Zermatt. The ride to Rotenboden, the second-to-last stop before the Gornergrat summit, takes about 28 minutes. From the platform, follow the "Riffelseeweg" signs and you reach the shore in 5 to 10 minutes. The lake lies a little below the station, so it stays out of sight until you start down the path. What will you see? The draw is the Matterhorn and its reflection in the water. Many visitors walk to the far side of the lake to look back toward the peak. In summer cotton grass lines the shore and black-nosed sheep graze the surrounding pastures. The area is protected, so keep to the marked paths. A small pond just before the main lake is often quieter and also reflects the mountain well. When should you go for the reflection? Wind decides everything. Dawn and dusk usually bring the calmest water, and even a light breeze can ripple the surface and spoil the shot. A Gornergrat restaurant stands nearby and the train stop sits just above the lake, so midday is busy. At over 2,700 m it can be cold and breezy, so pack an extra layer. Which hikes start at Riffelsee? Rotenboden – Riffelsee – Riffelberg: an easy trail of about 3 km, around one hour, with a high point near 2,814 m. Rotenboden – Riffelalp: a medium-grade panoramic route, described as 1.5 to 2 hours, with a few steep switchbacks and a descent of about 580 m. Down from Gornergrat: ride to the top and walk back past the lake. The full route from Gornergrat to Findelbach station is about 10.5 km. You can also start at Riffelberg station and climb on foot, which costs less than the train but takes more effort. Frequently asked questions How high is Riffelsee? Sources give about 2,757 m above sea level. Rotenboden station sits slightly higher, at 2,815 m. How long is the walk from Rotenboden station? Usually 5 to 10 minutes on an easy path signed "Riffelseeweg". When is the best time for the Matterhorn reflection? Early morning or toward evening, when the wind drops and the water is smooth. Is the hike difficult? The stretch from Rotenboden to the lake is easy. The longer descent to Riffelalp needs moderate fitness.

Lej da Pischa

Pontresina

Lej da la Pischa (Lej da Pischa, also called Pischasee in German) is a high-alpine lake above Pontresina in the Engadin valley, canton of Graubünden, Switzerland. It sits in a rocky basin below the Fuorcla Pischa pass, in ground shared with ibex. No road reaches it, so the visit is a hike. Where is Lej da la Pischa? The lake lies between the Val da Fain valley and the Alp Languard area, high above Pontresina. The name is Romansh, where "lej" means lake. Trail descriptions put Fuorcla Pischa at 2,848 m above sea level. The plateau around it is a broad stretch of stone with cairns and several small ponds. How do you get there? Most walkers start at the Bernina Suot stop, served by bus and by the Bernina railway. From the stop, follow the pass road briefly toward Diavolezza, then turn onto the path through Val da Fain. The narrow stretch below the pass is secured with ropes. From the other side you can set out from Pontresina or ride the chairlift to Alp Languard to shorten the walk. This route is stage 3 of the "53 Bernina Tour", running from Diavolezza over Fuorcla Pischa to Pontresina. Graubünden Tourism lists about 10.9 km, roughly 4.5 hours of walking, around 800 m of ascent and a high point near 2,860 m. It is rated as demanding. What will you see? A stony high-mountain landscape with small lakes and cairns marking the way. Ibex. The cliffs of Piz Albris hold one of the biggest ibex colonies in the Alps, so sightings are common. In Val da Fain: alpine flowers and marmots. Further along: Lej Languard, and about 30 minutes beyond it the Paradis hut, known for its cakes. When should you go? Summer and early autumn are the walking season. Snow can linger on the pass into summer, so check conditions at the Pontresina tourist office before setting off. Bring hiking boots, extra layers and enough water, since the only refreshment on the route is the hut near the end. Frequently asked questions Can I drive to the lake? No. Only footpaths lead there, from Pontresina, Alp Languard or Bernina Suot. Is it the same as Lej da la Pêsch? No. Lej da la Pêsch is a separate lake near Samedan, and Lej Nair lies below the Lago Bianco dam. Is the hike hard? It is demanding. The narrow rope-secured path needs a steady step, and the climb adds up to several hundred metres. Will I see ibex? Probably. The Piz Albris area is one of their main habitats in the Alps.

Bommer Weiher

Alterswilen

Bommer Weiher is a chain of historic ponds near Alterswilen, in the municipality of Kemmental in the Swiss canton of Thurgau. Together they cover roughly 15 hectares at about 530 m above sea level. Today the whole area is a nature reserve, and a quiet walk along the water is the main reason to visit. What are the Bommer Weiher? Sources date the ponds to around 1460, when they were created to supply mills, and regional sources also mention fish farming. They lie in a shallow hollow just north of Bommen, a small farming hamlet that the national ISOS inventory treats as part of a protected pond landscape. What will you see there? Expect open water, reed beds and meadows around the edges. The ponds are an important habitat for water birds and amphibians, which is why the entire area is protected. Bring binoculars in spring and early summer, when birdlife and frog calls are at their best. Heavy silting threatened the ponds, and they were restored in 1979. Land consolidation work between 1967 and 1987 also settled their protection, so the layout you walk through is more than five centuries old. How do you get to Bommer Weiher? The nearest village is Alterswilen, a former municipality that merged into Kemmental in 1995 and 1996. From Kreuzlingen on Lake Constance you drive up to the area and then explore on foot. The ponds also sit on a hiking route from Weinfelden to Kreuzlingen: about 17 km, around 4.5 hours, medium difficulty, passing through Ellighausen to the ponds and finishing near Bernrain. A planet trail through the reserve also leads to Kreuzlingen and the Lake Constance planetarium. When is the best time to visit? The area is popular for recreation all year. Spring and early summer suit wildlife watching, autumn is calm and quiet, and in winter the water can freeze over. Wear sturdy shoes, since paths near the shore can be muddy. Frequently asked questions Is Bommer Weiher a single lake? No. It is a series of ponds, described in local listings as an upper and a lower pond, close to each other. Can you swim here? The ponds are a nature reserve, so plan on walking and watching wildlife rather than swimming. Keep noise down and stay on the paths. How long should you plan for a visit? One to two hours is enough for the ponds themselves. If you combine them with the Weinfelden to Kreuzlingen hike, allow about 4.5 hours of walking. Where exactly are the ponds? Beside the hamlet of Bommen near Alterswilen, in Kemmental, Thurgau, a few kilometres from Kreuzlingen and Lake Constance.

Lac de Châteaupré

Anniviers

Lac de Châteaupré is a small high-alpine lake in the municipality of Anniviers, in the Swiss canton of Valais. It sits at roughly 2,350 m in the Moiry valley, a side branch of the Val d'Anniviers, right below the tongue of the Moiry glacier. Few lakes at this altitude in the Grimentz area are as easy to reach. Where is the lake and what feeds it? The lake lies in the upper Moiry valley, above the dam and reservoir of Lac de Moiry. The Gougra river feeds it with meltwater from the Moiry glacier, and the same river leaves the lake and runs about 1.2 km down to the reservoir. Sources quote an elevation between 2,349 and 2,357 m, most often 2,352 m. How do you get to Lac de Châteaupré? The road climbs from Grimentz up the Moiry valley, and the lake is about 10 km from the village. It is normally open from the end of June until the first heavy autumn snowfall. A large car park stands on the north shore, and a post bus line (stop Moiry VS, glacier) ends at the same spot, so you can arrive without a car. What will you see? Glacial meltwater gives the lake a milky turquoise tint, with the Moiry glacier and the surrounding peaks as a backdrop. The Lac de Moiry dam is visible from the area. Nearby you will find the Cabane de Moiry, Lac de la Bayenna (about 2,546 m), Lac du Louché and the Roc de la Vache viewpoint. On Komoot the spot averages 4.8 stars from around 150 reviews. Which hikes start nearby? Tour du Lac de Moiry (about 13-14 km, 4.5-5 hours): a loop from the Moiry dam (2,248 m) through Lac de Châteaupré and Lac de la Bayenna, with about 840 m of ascent and high sections near 2,500 m. Cabane de Moiry loop (about 6 km, 3 hours): a moderate route with roughly 450 m of climbing. Moiry-Châteaupré loop from Couronne de Bréona (13 km, about 4.3 hours): moderate, around 520 m of ascent. Road cycling and trail running are also popular in the valley. When should you go? Late June to September is the best window, when the road is open and the trails are clear of snow. Weather changes quickly at 2,350 m, so bring warm layers and sun protection. In winter the valley road is closed to traffic and the area becomes winter terrain. Frequently Asked Questions Can I drive to the lake? Yes. A road leads from Grimentz to the north shore, where a large car park is located. It is usually open from the end of June until the first big snowfall. Is there public transport? Yes. A post bus line to Moiry terminates by the north shore. What is the altitude? About 2,350 m above sea level; the most quoted figure is 2,352 m. Which trail passes the lake? The Tour du Lac de Moiry, a 13-14 km loop from the Moiry dam via Lac de Châteaupré and Lac de la Bayenna, with about 840 m of ascent.

Gebidumsee

Visperterminen

Gebidumsee (also spelled Gibidumsee) is a small alpine lake in the municipality of Visperterminen, canton of Valais, sitting right beside the Gebidum Pass. It lies at roughly 2,193 m above sea level and covers only about two hectares. Hikers reach it on an easy mountain walk above one of Europe's highest vineyards. Where is Gebidumsee? The lake is in the Pennine Alps, close to the Gebidum Pass, which links the Visperterminen side with the Nanztal valley. Most walks begin at the Giw cable-car station above Visperterminen, and the trail toward the pass goes past the water. What will you see there? Gebidumsee is a tarn ringed by meadows and rocky slopes. In summer it makes a natural rest stop, and route descriptions mention swimming as an option. In winter the lake freezes over and becomes a waypoint on snowshoe routes, one of which continues to the Gibidum viewpoint at 2,317 m. The lake also works as a reservoir for the Heido, one of Valais's historic suonen, the hand-built irrigation channels. The upper and lower Heido once brought water to the meadows of Visperterminen; today only the upper channel is still running. Sources also mention an old channel called the Biss or Eida that feeds the basin with meltwater from the Fletschhorn glacier area. Under the pass runs a 2.65 km tunnel, in use since 1916, that carries water from the Nanztal to Visperterminen. The pass itself appears on maps from 1842 and 1843, and a road was later built along the old mule track. A wooden cross stands at the top. How do you get to the lake? A popular route is Giw – Gibidum Pass – Gspon: about 11.6 km, around 3.5 hours, rated easy. It starts at the Giw cable-car station and ends in Gspon, where you can descend into the valley. A longer option leads from Visperterminen through the Nanztal all the way to the Simplon Pass. When should you go? Summer and early autumn, when the paths are free of snow, are the best months. In winter the area is open to snowshoers, for example on the Panoramatrail loop from Giw over the Gibidum Pass and back. Frequently asked questions Is Gebidumsee the same as the Gebidem dam? No. Stausee Gebidem (Gibidum) is a separate reservoir near Naters at 1,436 m. The lake at Visperterminen is much smaller and sits far higher. Where do I start the hike? Take the cable car from Visperterminen to Giw and follow the trail toward the Gebidum Pass. Can you swim in the lake? Route guides list it as an option. At 2,193 m, expect cold water. How long is the walk from Giw to Gspon? About 3.5 hours over roughly 11.6 km.

Lej da la Tscheppa

Sils im Engadin/Segl

Lej da la Tscheppa (German: Tscheppasee) is a small alpine lake high above Sils im Engadin/Segl, in the Upper Engadine of the canton of Graubünden, Switzerland. It sits at roughly 2,600 m (2,616 m is the figure most often quoted) and covers just under 8 hectares. The name is Romansh, in the Puter dialect of the Engadine. It rewards walkers who prefer a quiet, rocky setting to the busier paths around Lake Sils. Where is it and how did it form? The lake lies above Sils Maria, on the side of the Corvatsch massif and Piz Polaschin. Until recently it received meltwater from the Crasta-Tscheppa glacier, which disappeared in 2003, so the spot is a vivid example of Alpine glacier retreat. The maximum depth is about 32 m. How do you get there? The usual route starts in Sils near the lakeshore beach on Lake Sils. The ascent takes around 2.5 hours on a steep zigzagging path, with about 900 m of climbing in total. The full circuit from Sils to the lake and back is about 11.6 km, and official listings give around 5 hours 20 minutes. It is graded as demanding and suited to experienced hikers. Alternatively, continue over the Muttaun area down to Silvaplana, which takes about 2 hours. You then return to Sils by bus. What will you see? Boulder fields and scree slopes of Piz Polaschin frame the water. Chamois are often spotted on the slopes, and with luck you may see a ptarmigan. The soundtrack is mostly wind and wildlife. There are no facilities by the lake, so carry your own water and food. When should you go? The trail is open in summer and early autumn, roughly July to October. Earlier in the season snow often lingers above 2,500 m. Start in the morning to stay clear of afternoon thunderstorms, which are common in the Alps in summer. Hiking boots and poles help on the steep terrain. Frequently asked questions How high is Lej da la Tscheppa? About 2,600 m above sea level. Sources give 2,616 m, and some trail listings say 2,622 m. How long is the climb from Sils? The ascent alone takes about 2.5 hours; the whole loop takes around 5 hours 20 minutes. Is the hike easy? No. It is long and steep, so it suits people with mountain experience and good fitness. Is there a mountain hut at the lake? No. Bring supplies from Sils or Silvaplana.

Leg Grevasalvas

Surses

Leg Grevasalvas is a mountain lake at 2,390 m above sea level in the municipality of Surses, canton of Graubünden, Switzerland. It lies above the village of Bivio, just beyond the Julier Pass. The name is Romansh, and German-language maps often call it Grevasalvas See. It is a popular goal for day hikes in the Val Surses area. Where is Leg Grevasalvas? The lake sits above Bivio, in the mountains around the Julier Pass, the road crossing that links central Graubünden with the Engadin valley. Its coordinates are roughly 46.457 N, 9.716 E. The regional tourism board, Val Surses Savognin Bivio, provides the official visitor information. How do you get to Leg Grevasalvas? Most hikers start at the Julier Pass, next to the Ospizio La Veduta inn at 2,238 m, where there is parking. A PostBus serves the pass, but not on a regular schedule, so check timetables before you travel. From La Veduta the climb to the lake is about 150 m of ascent. You can also approach from Bivio, and the Fuorcla Grevasalvas saddle is reachable from Sils Baselgia and from Plaun da Lej. What will you see on the hike? The classic loop is about 10.2 km and takes roughly 5 hours. It runs from the pass to the lake, then up to the Fuorcla Grevasalvas saddle at 2,688 m. From the saddle you look toward the Engadin and the Bregaglia mountains, which makes it a natural place to rest. The trail then descends to the village of Grevasalvas (1,940 m), known as a filming location for the Heidi series, and ends at Plaun da Lej (1,798 m), where a bus takes you back. When should you go? This is a snow-free-season route. At this altitude the lake and the saddle are usually clear only in summer and early autumn. There is no hut along the way, so carry water and warm layers, since mountain weather changes quickly. Frequently asked questions How high is Leg Grevasalvas? It lies at 2,390 m above sea level. Can I walk to the lake from the Julier Pass? Yes. From Ospizio La Veduta (2,238 m) the walk to the lake is short, and the full loop via Fuorcla Grevasalvas takes about 5 hours. Is there public transport? A PostBus runs to the Julier Pass, though irregularly. Check the current timetable before setting out. Why is the village of Grevasalvas famous? It was used as a filming location for the Heidi series and lies at the bottom of the route, at 1,940 m.

Crestasee

Flims

Crestasee is a small swimming lake in Flims, in the Swiss canton of Graubünden, set on the border between the municipalities of Flims and Trin. Its Romansh name is Lag la Cresta. Forest surrounds the dark green water, and in summer it is one of the favourite bathing spots of the Flims Laax region. How did the lake form? The area sits on the debris left by the huge Flims Rockslide, dated to roughly 10,000 years ago. Water here travels partly underground and surfaces to feed several forest lakes above the Rhine gorge, Crestasee among them. Do not confuse it with nearby Caumasee, whose water is turquoise; Crestasee stands out for its deeper green tone. What can you do there? Swim and sunbathe. The lake is natural, and in hot weather the water passes 24 °C. The bathing season runs roughly from mid-May to mid-September, with a lifeguard on duty. Eat in a historic house. On the northern shore a building served as a guest house from 1892. Today it is a restaurant that has kept its original character, and a kiosk operates by the beach in season. Visit the Felsbach gorge. The Felsbachschlucht begins near the northern end of the lake and combines well with a swim. Come in winter. The path to the lake is also a marked winter walking route, though swimming is off the menu. How do you get to Crestasee? No road reaches the lake, so the last stretch is on foot. From the centre of Flims Dorf, an easy path of about 3.3 km takes around 45 minutes. By bus, get off at Trin-Mulin Crestasee or Felsbach Crestasee, both a short walk from the water. If you want a longer outing, a loop leads past Caumasee, the village of Conn and the Il Spir viewing platform. It covers about 8.6 km in around 2 hours 20 minutes, and Lag la Cresta comes up after roughly two hours. When should you visit, and what does it cost? July and August give the warmest water. Outside bathing season the trails to the lake are still worth walking, and the area is quieter. The restaurant is open from March to mid-December and closes on Mondays in spring and autumn. Entry is charged in season; in 2026 an adult ticket cost CHF 7 and a reduced one CHF 5. Check current hours before you go. Frequently asked questions Can you swim in Crestasee? Yes. It works as a natural bathing lake, with the season lasting from mid-May to mid-September. Can you drive to the lake? No. Cars cannot reach it. Park in Flims or take the bus, then walk the final stretch. How is Crestasee different from Caumasee? They are two separate lakes near Flims. Caumasee is famous for its turquoise water, while Crestasee is smaller and a darker green. Is there food at the lake? Yes. A restaurant in the former guest house stands by the shore, and a kiosk opens in season.

Lago del Zött

San Carlo

Lago del Zött is a high-alpine reservoir above San Carlo in the Val Bavona (municipality of Cevio, canton of Ticino, Switzerland). At roughly 1,940 m above sea level, it sits a short walk from the top station of the San Carlo cable car, with the Basòdino massif and its glacier rising behind it. It suits anyone who wants real Swiss mountain scenery without a long climb. What is the lake? The lake exists because of a 36 m arch dam finished in 1967. It covers about 0.13 km² and stores around 1.65 million m³ of water. It belongs to the hydroelectric network of the Maggia valley and is linked to the neighbouring Robièi reservoir. Meltwater from the Basòdino glacier feeds the area, which explains the cool, crisp feel up here. How do you get to Lago del Zött? Everything starts in San Carlo, the last sizeable hamlet in the Val Bavona. You can drive or take the PostBus from Bignasco, and there is parking at the cable car's valley station. The San Carlo – Robièi cable car climbs about 900 m and runs in summer, roughly from mid-June to early October. From the top station, the dam is around 15 minutes on foot. What will you see? The curved dam and the lake surface, framed by rock and alpine pasture. The Basòdino glacier, one of the best-known in Ticino. Small lakes around Robièi that are easy to string into a short loop. The Capanna Basòdino, a Swiss Alpine Club hut by the Robièi lakes, reachable without a long approach. Which trails start here? The shortest option is the stroll from the cable car to the dam. A longer circuit from Robièi runs via Lago dei Matörgn and the Bocchetta di Val Maggia to Lago del Zött and back. It covers about 12 km with roughly 950 m of ascent and takes around 5 hours. It is graded T4 (demanding): the final descent zigzags steeply along the right side of the dam and is not for anyone uneasy with heights. An easier loop via Lago dei Cavagnöö is about 6.6 km with around 380 m of climbing. From the hut, a route over Randinascia to Robièi takes about 2.5 hours. The Alta Via Cristallina stage (trail 59.02) also passes through the area. When should you visit? The season runs from June to October, when the cable car operates and trails are clear of snow. July, August and September usually bring the most settled weather. Mornings tend to give clearer views of Basòdino. Pack an extra layer, since near 2,000 m it is much cooler than in San Carlo. FAQ Can you walk to the lake from San Carlo? Yes, but it is a long ascent. Most visitors take the cable car to Robièi and skip about 900 m of climbing. How long is the walk from the cable car to the dam? About 15 minutes. Longer loops take 2.5 to 5 hours depending on the route. Is the trail around the lake difficult? The walk to the dam is easy. The circuit over the Bocchetta di Val Maggia is graded T4 and calls for sure footing and good fitness. Is there parking? Yes, at the cable car station in San Carlo. When does the cable car run? In summer, roughly mid-June to early October. Check the operator's current timetable before you go.

Schwarzsee

Zermatt

Schwarzsee above Zermatt is a small alpine lake in the Swiss canton of Valais, sitting at roughly 2,550 m right beneath the Matterhorn. A chapel and a cable car station stand beside it, and the trail to the Hörnli hut, the standard approach to the summit, begins here. Do not confuse it with the Schwarzsee in the canton of Fribourg, which is a different lake altogether. How do you get to Schwarzsee? Take the gondola from Zermatt up to Furi, then change to the second cable car, which ends at the lake. The first departures from Furi leave only in the morning, between about 8:10 and 8:50 depending on the month, so check the timetable before you set out. From the station it is a few minutes on foot to the water and the chapel. You can also arrive on foot. The Matterhorn Glacier Trail links Trockener Steg with Schwarzsee and explains how the retreating glacier shaped the plants and animals along the way. What is there to see at the lake? The main draw is the view. The pyramid of the Matterhorn reflects in the water of a shallow hollow, and on a clear day this is among the most photographed scenes in the Alps. On the shore stands the little chapel of Maria zum Schnee. Local tradition links it to travellers who were saved from fog near the Theodul Pass, and climbers still stop here to give thanks after coming down from the mountain. Refreshments are available at the station, and the area suits day trips that need no technical gear. Which trails start from Schwarzsee? Hörnlihütte: about 8.5 km round trip, roughly 4.5 hours. Past the lake there is a short, steep climb, then another towards Hirli, and around an hour and a half to the hut. The path is demanding, partly exposed and crowded in high season. Larch Walk: around four hours along the mountainside towards Hermettje, returning to Furi. A calmer choice if you want to avoid steep stretches. Longer outings: combining Schwarzsee with Zmutt adds about 1,000 m of climbing and takes real effort. When should you visit? Summer and early autumn work best, when the trails are clear of snow and the lifts run. Mornings bring fewer visitors and a better chance of a clear Matterhorn; clouds often gather around the peak later in the day. Frequently asked questions Can I reach Schwarzsee by cable car? Yes, by gondola from Zermatt via Furi. The upper station is next to the lake. How high is the lake? Sources give between roughly 2,550 and 2,580 m above sea level, so bring a warm layer even in July. Is the hike to the Hörnli hut easy? No. It is a difficult, partly exposed trail that calls for fitness and sturdy footwear. Is there a chapel at the lake? Yes, Maria zum Schnee, right on the shore. It is one of the landmarks of the spot.

Lago di Morghirolo

Faido

Lago di Morghirolo is a high-alpine lake in the Swiss canton of Ticino, within the municipality of Faido in the Leventina valley. It sits at roughly 2,263 m above sea level beneath Pizzo Campolungo and covers just over 12 hectares. Mountains rise on three sides, and the only gentle approach to the water is along the south-west shore. Where is Lago di Morghirolo? The lake lies in the Lepontine Alps, at the head of the Piumogna valley, at about 46.449 N, 8.719 E. The Piumogna river starts here and runs down the valley to join the Ticino near Faido. The village at the valley mouth, Dalpe, is where most walkers begin. How do you hike to Lago di Morghirolo? The standard route starts in Dalpe (1,192 m) or Polpiano (1,365 m). The path follows the Piumogna up to the Capanna Campo Tencia hut. From the hut, the lake is around half an hour on foot, with roughly another 100 m of climbing. Timing: the Ticino cantonal guide quotes about 4 hours from Dalpe to the lake. The Bellinzona e Alto Ticino tourism board lists an 11 km round trip of about 5 h 15 min, rated moderate. Longer loop: the Dalpe – Capanna Campo Tencia – Lago di Morghirolo circuit covers 18.3 km with about 1,130 m of ascent. Komoot rates it hard, calling for good fitness, sure footing and sturdy boots. Waymarking: newer markers route the trail past the lake, replacing the older and tougher scree line up to Passo del Löit. Where can you stay and eat? The nearest base is Capanna Campo Tencia, a hut run by the Ticino section of the Swiss Alpine Club (CAS) at 2,140 m. It was built in 1912 at the foot of Pizzo Campo Tencia and is regarded as the first mountain refuge in the Ticino Alps. It offers beds and meals, so the lake fits neatly into a two-day trip. What will you see? A still sheet of water in a rocky bowl, ridges around Pizzo Campolungo, and open terrain well above the tree line. This is a destination for quiet alpine scenery rather than facilities: there is nothing on the shore itself, so carry food and water from the hut or the valley. Frequently asked questions How high is Lago di Morghirolo? About 2,263–2,264 m above sea level; sources differ by one metre. Where is the easiest place to start? Dalpe (1,192 m) or Polpiano (1,365 m). Both are in the Piumogna valley, a few kilometres from Faido. Is the hike easy? No. It is a high-mountain walk with several hundred metres of ascent, and it requires fitness, hiking boots and alpine experience. Is there a hut nearby? Yes. Capanna Campo Tencia, at 2,140 m and about 30 minutes from the lake, offers accommodation and meals.

Lago dei Cavagnöö

Cevio

Lago dei Cavagnöö is a high-alpine reservoir in the municipality of Cevio, Ticino, in the upper Val Bavona, in the area of the former Bignasco municipality. Sitting at roughly 2,310 m above sea level, it covers 0.46 km2. It belongs to the chain of hydropower lakes at the head of the Vallemaggia, and it doubles as a rewarding hiking goal. What kind of lake is it? The water is held back by the Cavagnoli arch dam, 111 m high and completed in 1968. The reservoir reaches a depth of about 100 m. Nearby you will find other storage lakes used for power generation: Lago di Robièi (about 1,940 m, up to 50 m deep), Lago Bianco and Lago del Zött. How do you get there? Head for San Carlo, at the end of the narrow Val Bavona, where the road stops and the postbus line terminates. From there a cable car carries walkers up to Robièi, saving about 900 m of climbing. The rest of the way is on mountain paths, so bring proper hiking boots and energy for several hours on foot. What will you see? The Cavagnoli dam wall, which you can walk along; hikers often name it the highlight of the outing. A deep blue reservoir ringed by granite peaks. Lago Bianco just below the dam, and Lago di Robièi on the approach. The Sentiero Cristallina trail, whose second stage passes Lago Bianco and Lago Sfundau on the way to the Capanna Cristallina hut. A popular loop starting at the lake and passing Lago di Robièi and Lago Bianco is about 10.6 km and takes around 3 hours 20 minutes. A shorter circuit linking Cavagnöö with Robièi and Lago del Zött covers about 6.7 km. Both are rated moderate. When should you go? At this altitude the season is short: generally late summer into early autumn, when paths are clear of snow and the cable car runs. Check trail and weather conditions with the local tourist office before setting out, since sections can be closed or interrupted. Pack warm layers even on a sunny day. Frequently asked questions Where is Lago dei Cavagnöö? In Ticino, municipality of Cevio, in the upper Val Bavona at about 2,310 m. Can you walk across the dam? Yes, the Cavagnoli dam can be crossed on foot, and visitors rate it among the best parts of the route. What is the quickest way to reach the lake area? Take the cable car from San Carlo to Robièi, which spares you about 900 m of ascent. From there you continue on foot. Is it a good day-hike destination? Yes. The loops around Robièi take a few hours and are of moderate difficulty.

Palü Lake

Poschiavo

Palü Lake (Lagh da Palü locally, Lago di Palü in Italian) is a mountain lake in the Val Poschiavo, in the Swiss canton of Graubünden, a short train ride above the town of Poschiavo. It sits at 1,923 m, right below Piz Palü, and covers about 5.2 hectares. Meltwater from the Palü Glacier feeds it, which is why the surface glows a milky turquoise. What will you see at Lago di Palü? The water colour is the main draw. The glacier grinds rock into fine flour that stays suspended in the lake and tints it green-blue. Behind it rises the glaciated Piz Palü massif, and the shoreline opens onto views down the valley. A dam built in 1926 raised the water level, so the lake today also works as a reservoir. A small hydropower building stands nearby, and one of the paths up from Cavaglia starts there. In autumn the larches around the lake turn yellow and set off the turquoise water. It is a fine time for photography, as long as the weather still allows a hike. How do you get to Palü Lake? No road reaches the lake, so the train does the heavy lifting. The Bernina line of the Rhaetian Railway stops at Alp Grüm and Cavaglia, and both stations have trails to the shore. From Alp Grüm (2,091 m): a steep path leads down in about 30 minutes. The climb back takes longer, so leave yourself time. Sturdy shoes are needed. From Cavaglia: the walk up to the lake takes roughly 55 minutes. Linear route: Alp Grüm – Lagh da Palü – Glacier Garden in Cavaglia is about 5 km and 1.5 hours. It pairs well with the Cavaglia glacier garden, which is open seasonally (roughly May to October). Longer option: Cavaglia – lake – Alp Grüm – Ospizio Bernina covers about 9.5 km with around 775 m of ascent, graded T2 (mountain hiking). When should you go? Trails are easiest from June to September. The restaurants at Alp Grüm generally run from about April to October. Early autumn brings fewer people and golden larches, but check trail conditions before you set out, because the weather at this altitude changes quickly. What should you bring? Hiking shoes with good grip, a warm layer, rain protection and water. There are no shops on the short stretch from Alp Grüm, so carry your supplies. Train tickets for Poschiavo – Cavaglia – Alp Grüm are sold at stations and in the RhB app. Frequently asked questions Can I drive to Palü Lake? No. Alp Grüm has no road connection and only footpaths lead to the shore. The easiest way is to take the train to Alp Grüm or Cavaglia. How long is the walk to the lake? From Alp Grüm the descent takes about half an hour, and from Cavaglia the ascent takes about 55 minutes. The full loop with the Glacier Garden takes 1.5 hours or more, depending on your pace. Why is the water milky? Glacier meltwater carries fine rock particles from the Palü Glacier. They scatter light and give the lake its green-turquoise tint. Is it a natural lake? It occupies a glacial basin, but since 1926 a dam has raised its level, so it also acts as a reservoir.

Geisspfadsee

Binn

Geisspfadsee is a high-alpine lake in the municipality of Binn, in the Swiss canton of Valais, above the Binntal valley. It sits at 2,439 m above sea level, covers roughly 18 hectares and serves as a landmark on a hiking route that crosses into Italy. Where is Geisspfadsee? The lake lies in the Lepontine Alps, within the Binntal Nature Park. Its outflow runs down to the smaller Züesee, at about 2,420 m. The Swiss-Italian border is close, and two mountain passes cross it in this area: the Geisspfadpass and the Grampielpass. What does the name mean? In the local dialect "Geiss" is a female goat and "Pfad" a path, so the name points to a route fit only for goats. The pass was never practical for pack horses or donkeys. Even so, smugglers used it until fairly recently, carrying their loads on foot. How do you get to the lake? The best-known route is the stage from Binn to Crampiolo on the Italian side. On the road toward the hamlet of Fäld, a signpost directs walkers to Geisspfadsee and Mässersee. Route descriptions put the lake about 7.5 km into the walk and the pass at roughly 8 km. The whole stage is just under 13 km with around 1,200 m of climbing, and takes about seven hours. The high point is near 2,480 m. Markings are white-red-white, and the trail is graded demanding, so you need good fitness and sure footing. For a gentler pace, the Binntal Nature Park lists a two-day loop from Fäld over the Albrun Pass to Crampiolo, returning via the Geisspfadpass. What will you see? A bare, rocky landscape above the tree line, with a sheet of water ringed by scree. The place suits walkers looking for quiet and open views rather than facilities. The descent on the Italian side crosses large scree fields, with chains and ladders in places. When should you go? At this altitude the hiking season is short, running through summer and into early autumn once snow has cleared. Check the weather and trail conditions beforehand and start early, since the full crossing takes a whole day. Frequently asked questions How high is Geisspfadsee? It lies at 2,439 m above sea level. How big is the lake? About 18 hectares. Can you walk to Italy from here? Yes. Two border passes, Geisspfadpass and Grampielpass, are nearby. The popular trail runs from Binn to Crampiolo. Is the hike difficult? The Binn to Crampiolo stage is rated hard because of its length, ascent and a scree descent. Good fitness and alpine experience are needed.

Seealpsee

Schwende-Rüte

Seealpsee is a mountain lake in the municipality of Schwende-Rüte, canton of Appenzell Innerrhoden, in north-eastern Switzerland. It sits in the Alpstein massif at roughly 1,143 m above sea level and covers 13.6 hectares. It ranks among the most popular walking destinations in the Appenzell Alps. What will you see at Seealpsee? Steep Alpstein rock walls rise around the lake and, on a windless day, mirror themselves in its calm surface. Mountain guesthouses with terraces stand on the shore, and you can watch ducks and rowing boats on the water. From here, paths lead on to other well-known places in the region, including the cave hermitage of Wildkirchli and Säntis, the highest peak of the Alpstein. How do you get to Seealpsee? No road reaches the lake. The shortest route starts at Wasserauen, the terminus of the railway from Appenzell. From there a footpath of about 3 km climbs some 300 m. Most walkers need one to one and a half hours, and the route is rated easy to moderate. The other common approach descends from Ebenalp. It is longer and clearly tougher, so it suits people with some mountain experience. A network of trails around Ebenalp links the lake with Wildkirchli and Säntis, which makes it simple to build a full-day loop. Where can you eat? Berggasthaus Forelle stands by the lake and is recommended by Switzerland Tourism. Its terrace serves Appenzell specialities with a view over the water. Guesthouses in the area usually open from May to October, so confirm opening hours before you set out, especially outside summer. Where do the lake's water and power go? The lake has a practical role too. The Kraftwerk Seealpsee-Wasserauen power plant, run by the Feuerschaugemeinde, produces hydroelectric power from it. The lake also supplies drinking water to the town of Appenzell. When should you visit? Late spring to autumn works best, when the trails are free of snow and the guesthouses are open. Early mornings are quieter, while the Wasserauen path can get crowded on fine weekends. Wear sturdy walking shoes and bring a warm layer, because the valley below the cliffs stays cool even in summer. Frequently asked questions Can you drive to Seealpsee? No. You must walk from Wasserauen, a distance of about 3 km. How long does the walk from Wasserauen take? Usually one to one and a half hours each way, with about 300 m of ascent. How high is the lake? It lies at about 1,143 m above sea level and covers 13.6 hectares. Can you have a meal at the lake? Yes, at Berggasthaus Forelle and other guesthouses, which usually open from May to October.

Märjelensee

Fieschertal

Märjelensee is a small lake above Fieschertal in the Swiss canton of Valais, sitting on the eastern edge of the Aletsch Glacier. What you see now is a remnant. In the 19th century this was one of the largest ice-dammed lakes in the Alps, and its sudden drainage threatened the Rhone valley. What is Märjelensee? The basin was carved by ice when a great arm of the Aletsch Glacier pushed towards the Fieschertal valley. A wall of ice held the water back. In the 1800s the lake measured roughly 1.6 km by 500 m, though Valais sources describe it as 2 km long and 25 m deep. It lies at about 46.44 N, 8.09 E, inside the UNESCO Swiss Alps Jungfrau-Aletsch area. Why was the lake dangerous? As the glacier shifted, meltwater found a channel beneath the ice and the lake could empty almost at once. The outbursts caused floods along the Rhone; one account says the water reached Sion. The same events fed a local legend about the Rollibock, guardian of the glacier. What can you see today? With the glacier in retreat, the big lake is gone. What remains is a small temporary lake known as Hintersee, about 100 m long, plus pools and bogs that turn white with cottongrass in autumn. From the Platta viewpoint you can judge how large the old lake was, and the Aletsch Glacier, the longest in the Alps, fills the view. The Gletscherstube Märjelen hut stands by the shore at roughly 2,363 m and is open from July to October. Since 1988 an artificial reservoir in the area has also supplied drinking and irrigation water to villages on the Aletsch plateau. How do you get there? Take the cable car from Fiesch via Fiescheralp to Eggishorn. The classic loop Eggishorn – Märjelensee – Fiescheralp is about 10–12 km, takes 3 to 4 hours and is graded medium. It passes Tälligrat and the little Tällisee, and on the way back you can walk through the lit Tälligrat tunnel. From Fiescheralp the hut is about 1.5 hours away via the upper Tälli and the tunnel. When should you go? Paths are best from July to September, and in good years into October. Carry a map, stay on marked trails and check the forecast, since mountain conditions change quickly. Frequently asked questions Is Märjelensee still a big lake? No. The old lake vanished as the glacier retreated; a small lake and some ponds remain. How long is the walk to the lake? Usually 1.5–2 hours one way from Eggishorn or Fiescheralp, and 3–4 hours for the full loop. Is there food nearby? Yes, the Gletscherstube Märjelen hut serves hikers from July to October. Why did the lake cause floods? Its water could suddenly escape under the glacier ice and rush down into the Rhone valley.

Lac des Vaux

Riddes

Lac des Vaux is a high-alpine lake in the municipality of Riddes (Riddes-La Tzoumaz) in the Swiss canton of Valais. It lies above La Tzoumaz and Verbier at roughly 2,540 metres, and you can only reach it on foot, ideally in summer. Where is Lac des Vaux? The lake sits in south-western Switzerland, in the mountains above the Rhône valley, at about 46.108° N, 7.273° E. The slopes of two well-known ski resorts, La Tzoumaz and Verbier, rise below it. For a visitor it is a full-day hiking goal in a genuine high-mountain setting: no buildings, with ridgelines all around. How do you hike to Lac des Vaux? The most popular option is a loop starting at the top station of the Savoleyres gondola (about 2,350 m). It covers roughly 14 km, takes around 4 hours 25 minutes and is rated intermediate. The path follows the ridge to Croix de Cœur, continues via Col des Mines to the lake, then descends to La Tzoumaz. A shorter variant of about 9 km (around 3 hours) heads from Savoleyres towards Les Ruinettes, finishing with a gondola ride down to Verbier. From the Croix de Cœur pass, the lake is about an hour and a half on foot. According to Valais tourism, the Savoleyres gondola runs in summer, in July and August, so check current timetables before setting out. You can also start from La Tzoumaz on foot, which makes the climb longer. What can you do at the lake? Lac des Vaux is a good place to rest after the ascent and take in the mountains. Fishing is allowed: a day permit costs CHF 30 and is sold at the La Tzoumaz tourist office. When is the best time to visit? The lake is typically frozen from about October to May. Its water is warmest in July and August, which is also when the Savoleyres gondola operates, making it the most convenient period for a visit. Weather above 2,500 m changes quickly, so pack warm layers, rain protection and sun cover. Frequently asked questions How high is Lac des Vaux? Sources give an elevation of about 2,543 to 2,545 m above sea level. Can you drive to the lake? No. The final stretch is on foot, usually from Savoleyres or La Tzoumaz. How long does the hike take? The Savoleyres loop is about 4.5 hours over roughly 14 km. From Croix de Cœur to the lake it takes about 1.5 hours. Can you fish there? Yes, with a CHF 30 day permit from the La Tzoumaz tourist office. When is the lake frozen? Roughly from October to May, so plan a summer hike.

Distelsee

Obergoms

Distelsee is a high alpine lake in the municipality of Obergoms, in the Goms valley of the Swiss canton of Valais. It sits at 2,587 m above sea level beneath the Brudelhorn and covers roughly 4.8 hectares. Only hikers reach it, which makes it a good target if you want mountain scenery without crowds. Where is Distelsee? The lake lies high above the upper Goms valley, near the Nufenen Pass road. Its coordinates are about 46.463° N, 8.323° E. The Brudelhorn (2,791 m) rises above the water, and nearby trails lead toward the Gries Pass and the Griessee reservoir. How do you get to Distelsee? The usual route starts at the Ladstafel bus stop on the Nufenen Pass road. From there the path heads west up the Lengtal valley, and you reach the lake after about 2 hours 15 minutes. If you want a summit, the Brudelhorn is a final climb of around 200 m beyond the lake. The full loop over the lake and summit is about 14.5 km and takes around 6 hours. The descent follows the northern slope down to Münster. The Swiss Hiking Federation grades the route T3, meaning demanding mountain hiking that calls for sure footing and good navigation. Parts of the descent are faintly marked, so carry a map or an offline GPS track. When should you go? The trail is normally free of snow from about June to September. At this altitude snow lingers in shaded spots and weather changes fast, so start early and check the forecast. What else do you pass on the way? One version of the route from Ladstafel also passes the Griessee reservoir, where the Gries wind park stands at roughly 2,500 m. Along the way, wide views of the Valais mountains open up. What should you bring? layers and a rain jacket, since 2,500 m can be cold even in summer, sturdy hiking boots, enough water and food for the whole route, sunglasses and sunscreen, as UV radiation is strong at altitude. Frequently asked questions Can you drive to Distelsee? No. You can take a bus or drive to Ladstafel on the Nufenen road, and the rest is on foot. How long is the walk from Ladstafel? About 2 hours 15 minutes one way to the lake. With the Brudelhorn summit and the descent to Münster, plan on roughly 6 hours. Is it a beginner hike? No. The T3 grade means you need fitness and experience on alpine terrain. When is the best time to visit? From June to September, in settled weather and ideally early in the day.

Sämtisersee

Schwende-Rüte

Sämtisersee is a small mountain lake in the municipality of Schwende-Rüte, in the Swiss canton of Appenzell Innerrhoden. It lies in the Alpstein range at 1,209 m above sea level, covers about 13 hectares and sits beneath the cliffs of Hoher Kasten. The neighbouring Fälensee is a short hike away. Where is Sämtisersee? The lake fills a high valley west of Brülisau, a village within Schwende-Rüte. Alpine pastures surround it and the Alpstein ridgelines rise above the water. The coordinates are roughly 47.27° N, 9.46° E. There is no large-scale development here: the only building on the shore is the Plattenbödeli mountain inn (1,279 m). How do you get to Sämtisersee? Road access ends at Brülisau; the rest is on foot. Public transport: take the Appenzeller Bahnen train to Weissbad, then the postbus to Brülisau and the valley station of the Hoher Kasten cable car. By car: drive straight to the car park at the valley station in Brülisau. On foot: the loop from Brülisau via Plattenbödeli to the lake and back is about 10 km and takes around 3.5 hours. The path is easy and crosses open pastures. What can you do there? The simplest outing is a walk to the water and back via the Ruhsitz inn (1,285 m), where you can stop for a meal. Stronger hikers combine the lake with the climb to Hoher Kasten (1,793 m). That loop from Brülisau is about 11 km with 950 m of ascent, roughly 5.5 hours. You can also do it in reverse: ride the cable car to the top, descend to the Kastensattel saddle and continue down to the lake. This is about 9 km and 3 hours, almost entirely downhill. From the lake you can also continue to Fälensee, about 2 hours 45 minutes from the cable car station in Brülisau. Cars and bikes are banned on that stretch, so it stays quiet. When should you go? Both inns, Plattenbödeli and Ruhsitz, normally open from May to the end of October. The best hiking months are June to September, and often October as well. Check current opening times for the inns and the cable car before you set out, as dates shift from season to season. Frequently asked questions Can you drive to Sämtisersee? Only as far as Brülisau. The final stretch to the lake is on foot. How long is the walk to the lake? The loop from Brülisau is about 10 km and takes around 3.5 hours. It is easy and well signposted. Where can you eat nearby? Plattenbödeli stands at the lake and Ruhsitz sits further down the trail. Both are open from May to the end of October. Can you combine the lake with Hoher Kasten? Yes. The walking loop from Brülisau over the lake to the summit takes about 5.5 hours, while the descent from the top after a cable car ride takes about 3 hours.

Lac Lioson

Ormont-Dessous

Lac Lioson is a small mountain lake in the municipality of Ormont-Dessous, just above the Col des Mosses pass and the village of Les Mosses in the canton of Vaud, Switzerland. It sits at roughly 1,848 m above sea level beneath Pic Chaussy, in the Vaud Alps, and covers about 7 hectares. Where is Lac Lioson? The lake lies in the Pic Chaussy massif, several hundred metres higher than the Col des Mosses (1,445 m). It belongs to Ormont-Dessous, at about 46.386° N, 7.129° E. The surroundings are wild and almost undeveloped, with high alpine pasture around the water. How do you hike to Lac Lioson? Most walkers start at the Col des Mosses or at the car park in Lioson d'en Bas, higher up the approach. A signpost at the pass gives about 1 hour 10 minutes to the lake. From the Lioson d'en Bas car park the walk takes roughly 30 to 60 minutes, depending on the source. The gradient is steady and the path is often recommended for families. If you want a longer day, a loop from the centre of Les Mosses covers about 9.4 km with around 500 m of ascent and takes about four hours. A variant via Pra Cornet and La Lécherette runs about 9.8 km with 640 m of climbing. You can reach Les Mosses by car or public transport: take a CFF train to Aigle, change to the Aigle – Les Diablerets line as far as Le Sépey, then continue uphill to the pass. What will you see at the lake? Lac Lioson sits in a bowl of rock and meadow, with Pic Chaussy (2,351 m) rising above it. The summit is about two hours on foot from the car park, so many visitors combine the lake with the climb. A mountain hut, the Refuge du Lac Lioson, stands nearby and makes a natural stop. When should you go? Summer and early autumn are best, when the trails are clear of snow. The water is usually very cold, so swimming is mainly a midsummer pastime. Check your route and the forecast before setting off, as walking times vary with the starting point. Frequently asked questions How high is Lac Lioson? About 1,848 m above sea level, roughly 400 m above the Col des Mosses. How long is the walk from the Col des Mosses? The pass signpost shows about 1 hour 10 minutes. From the Lioson d'en Bas car park it is shorter. Can you climb Pic Chaussy from here? Yes. The summit (2,351 m) is about two hours from the car park, and the pass signpost gives 2 hours 45 minutes. Can you swim in the lake? The water is very cold, so swimming is only advisable in high summer and for well-acclimatised swimmers.

Lac Bleu

Evolène

Lac Bleu is a high-mountain lake in the municipality of Evolène, in the Swiss canton of Valais. It sits at roughly 2,090 m above sea level at the head of the Val d'Hérens, a few kilometres from the village of Arolla. A walk of under an hour brings you to vivid turquoise water framed by larches and rocky summits. Which Lac Bleu is this? Several lakes in Switzerland and France share the name. This one belongs to the Val d'Hérens in the Pennine Alps and is tied to Arolla, a well-known mountaineering and ski base. It falls under the commune of Evolène. The shore has no facilities at all: no toilets, no waste bins and no water-quality monitoring. Why is the water so blue? The colour comes from a blend of algae and glacial clay suspended in the water. On sunny days the surface shifts from turquoise to deep blue, which makes the lake one of the valley's most photographed spots. How do you get there? You can only reach the lake on foot. The shortest route starts at La Gouille, a hamlet on the road to Arolla, where cars can park along the roadside. A steep path climbs about 260 m in 40 to 45 minutes. From Arolla itself, an easy trail via the Pramousse pond takes around 1 hour 30 minutes. By public transport, travel through Sion and take the postbus up to Les Haudères, from where services continue up the valley. Keen hikers can try the demanding loop from Arolla past the Cabane des Aiguilles Rouges and back by the lake. It covers about 14 km and takes roughly 5.5 hours. When should you go? The trail is easiest in the snow-free months, usually June to October. Start in the morning for good photo light and a quieter path. Carry water and a warm layer, since weather changes fast at this altitude. Check current trail conditions with the Evolène region tourist office before setting out. What else is nearby? You pass the Pramousse pond on the way, and the upper valley has routes to mountain huts and glaciers. The Pension du Lac Bleu serves regional dishes, including ruchya. The Val d'Hérens is known for its traditional villages and its Hérens cattle. Frequently asked questions Can you swim in Lac Bleu? The tourist office asks visitors to stay out of the water. The lake is unsupervised and its water quality is not tested. How long is the walk? About 40 to 45 minutes from La Gouille, or about 1 hour 30 minutes from Arolla. How high is the lake? Around 2,090 m above sea level. Can I drive to the lake? Not all the way. Park by the road at La Gouille and walk the rest.

Dittligsee

Forst-Längenbühl

Dittligsee is a small lake in Forst-Längenbühl, in the canton of Bern, a short distance from Thun. It sits at 652 m above sea level between Blumenstein and Wattenwil and covers roughly 6 hectares. A reed belt rings most of the shore, so the open water is best seen from the jetty and the designated swimming spot. Where is Dittligsee and what is it like? The lake lies on the eastern edge of the Gantrisch Nature Park, in the Gürbetal valley. The surroundings are quiet farmland, and the small lakes of this area are under nature protection, which is why the shoreline has stayed largely undeveloped. Water leaves through the Dittligseebach into the Fallbach, which finally joins the Gürbe river. People lived here long ago. Dugout canoes from the Neolithic period have turned up in both Dittligsee and nearby Geistsee. The village of Längenbühl first appears in records in 1493, and in 2007 it merged with Forst to form today's municipality. What can you do at the lake? Stroll along the reeds — an easy, family-friendly walk with views across the water and meadows. Wooden jetty on the west bank — a good spot for a rest or photos. Swimming — allowed at your own risk, with no lifeguard. Enter and leave the water only at the marked spot. Grizzly adventure park — a family attraction at the lake entrance, with a mini golf course. The Grizzlybär inn on the south shore serves food and drinks. The lake also appears on easy hiking routes, such as Seftigen to Amsoldingen or Uetendorf to the Grizzly park. How do you get to Dittligsee? A bus from Thun stops right at the lake, and the shore is freely accessible. For a longer walk, start in Uetendorf or Seftigen and continue on foot. When should you visit? Summer suits swimming and picnics, when the inn and park are open. Spring and autumn are calmer, and the reeds show their best colours. Water quality has limits: cantonal monitoring reports low oxygen in the deeper layers, so this is a lake for walks and a relaxed dip rather than serious swimming. Frequently asked questions Can you swim in Dittligsee? Yes, at your own risk and without a lifeguard. Use only the designated entry point. Is there an entrance fee? No, the shore is open to everyone. Attractions in the Grizzly park may cost extra. Can you reach it by public transport? Yes. A bus from Thun stops at the lake. Is it good for a trip with children? Yes. Easy paths, a jetty, mini golf and the adventure park make it a good half-day outing.

Obersee

Arosa

Obersee in Arosa is the larger of the two lakes inside the Swiss resort village of Arosa, in the canton of Graubünden. It sits at roughly 1,735 m above sea level, a few minutes' walk from the village centre. Its surface covers about 7 hectares and is framed by spruce-covered slopes, which makes it a natural gathering spot in every season. What is the Obersee and how big is it? The lake is about 390 m long and 250 m wide, with a maximum depth of 13 m and an average near 7 m. The Mittelbach stream links it to the smaller Untersee, which lies lower, at around 1,690 m. A quirk of local administration: both lakes belong to the civil community of Chur rather than to Arosa itself. Do not confuse this lake with other waters called Obersee, such as the one in Glarus or the upper basin of Lake Constance. How do you get there? The shore is right beside Arosa railway station. The scenic mountain railway from Chur brings you to the resort, and the water is practically in front of you when you step off the train. Drivers can leave the car in the car park building next to the lake. What can you do here in summer? Rowing boats and pedal boats are available for hire in the warm season. A water show takes place several times a week and is best watched from the lakeside path. Anglers fish the shallows, and on hot days some visitors swim, though alpine water stays cool. The lake is also a handy starting point for a walk around its edge and on towards the Untersee. What happens on the lake in winter? When the surface freezes and is covered with snow, the lake turns into an event venue. It hosts a traditional horse race on snow, a winter golf tournament and a hot-air balloon week, making it one of the signature spots of Arosa's winter calendar. Is there wildlife? Yes. Water birds and reed birds live around the lake, including diving ducks and most European dabbling duck species. Early morning, before the shore fills up, is the best time to watch them. When should you visit? Summer brings boats and the water show, while winter brings snow-based events. Spring and autumn are quieter, with the same mountain views. Check the Arosa Lenzerheide tourism site for the current programme and seasonal details. Frequently asked questions Can you go boating on the Obersee? Yes, rowing boats and pedal boats are rented out in summer. How many lakes are there in Arosa village? Two: the larger upper Obersee and the lower Untersee, joined by the Mittelbach stream. Can I walk to the lake from the station? Yes, the lake is right next to the railway station, and a car park building stands beside it. Is the lake worth visiting in winter? Yes, it hosts a horse race on snow, a winter golf tournament and a balloon week.

Nature in Switzerland

Lämmerensee

Riffelsee

Lej da Pischa

Bommer Weiher

Lac de Châteaupré

Gebidumsee

Lej da la Tscheppa

Leg Grevasalvas

Crestasee

Lago del Zött

Schwarzsee

Lago di Morghirolo

Lago dei Cavagnöö

Palü Lake

Geisspfadsee

Seealpsee

Märjelensee

Lac des Vaux

Distelsee

Sämtisersee

Lac Lioson

Lac Bleu

Dittligsee

Obersee

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