Nature in Spain
A guide to 787 Nature in Spain — with descriptions, photos and traveler visits from the NextOnTrip community. Locations spread across 469 cities and towns. Most visited by the community: Comunero de Revenga, Dehesa de Navalcarbón, Painted Cave, Galdar.
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Estany Gelat de Comaloforno
la Vall de Boí
Estany Gelat de Comaloforno is a high-mountain glacial lake in the municipality of la Vall de Boí, sitting inside the Aigüestortes i Estany de Sant Maurici National Park in the Alta Ribagorça comarca. The lake rests at roughly 2,683 metres above sea level, in the upper Caldes valley, northeast of Pic de Comaloforno and east of the Besiberri Sud massif. The Catalan word "gelat" means "frozen," a fitting name — for most of the year the lake stays locked under ice and snow, revealing its striking turquoise water only during a short summer window. How do you get there? Most routes start from the car park at the Cavallers Dam (Pantà de Cavallers, about 1,723 m), reached by road from Caldes de Boí. From there the trail climbs steeply through the Pas de l'Ós pass toward Coma les Torres before continuing on to Estany Gelat de Comaloforno. The hike demands solid fitness — the elevation gain approaches a thousand metres, and the final stretches are steep and exposed in places. This is not a walk for beginners, but experienced hikers cover it comfortably in a single day. What will you see? The lake sits in a stark, high-alpine setting, ringed by the rocky ridgelines of the Pyrenees. It's a classic glacial tarn — small, deep, and fed by melting snow and ice from the surrounding slopes. Nearby lie other lakes from the same group, including the Estanys de Gémena, which makes it easy to plan a longer circular route linking several bodies of water. For more ambitious hikers, Estany Gelat de Comaloforno also serves as a springboard for climbing Pic de Comaloforno or Besiberri Sud, both summits visible practically within arm's reach from the shore. Bring a camera: the contrast between the dark-blue water, patches of white snow, and grey rock makes for one of the more distinctive views in the entire park. When should you visit? The best window is summer, from July to September, when most of the snow has melted and the trails are passable without winter gear. Outside that period, the lake and surrounding passes can still be snowbound, which sharply raises both difficulty and risk. Start early in the day — weather in the high Pyrenees can turn abruptly by afternoon, and thunderstorms are common around peaks above 2,500 m during summer. Frequently asked questions Is the hike to the lake difficult? Yes. It's rated difficult due to its length, substantial elevation gain, and steep, partly exposed sections, especially around the Pas de l'Ós. Good physical condition and mountain hiking experience are required. Can you swim in the lake? The water in this glacial lake, sitting at nearly 2,700 m, stays very cold year-round, and swimming isn't practiced or recommended — it's primarily a scenic and route destination for hikers and climbers. How long does it take to reach the lake? From the Pantà de Cavallers car park, the one-way climb typically takes a few hours depending on fitness and the chosen route variant; a full-day round trip is the standard plan. Do you need a permit to enter the national park? Hiking on the trails of the Aigüestortes National Park is generally open to the public, though it's worth checking current rules on any seasonal entry limits for popular routes during summer.
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Lagunas de San Martín
Valderrueda
Lagunas de San Martín is a group of three small lakes near the village of San Martín de Valdetuéjar, part of the municipality of Valderrueda in the eastern reaches of the Montaña Leonesa — the mountainous region of the province of León. Locals simply call them "las pozas" (the pools), and for years they were a quiet neighborhood secret before word spread among travelers, photographers, and nature lovers from León, Palencia, and even Asturias and Cantabria. Where did these lakes come from? The lagoons aren't a purely natural feature — they formed inside former mining pits in the Valdetuéjar Valley. Once extraction stopped, the abandoned workings filled with water, leaving behind three distinct pools. One of them is now too overgrown with fallen leaves to swim in comfortably, but the other two remain the main draw for visitors. What will you see there? One of the most noticeable traits of the water here is the sharp temperature contrast at different depths. Near the surface, in the first few meters, the water warms up surprisingly fast, but the deeper you go, the colder it gets — a typical effect in pools born from old mining excavations. The surroundings offer the classic scenery of the Montaña Oriental Leonesa: green slopes, quiet trails, and an intimate atmosphere far removed from the crowds of bigger resort towns. Beyond tourism, Lagunas de San Martín also serve a practical purpose: firefighting aircraft and helicopters have long drawn water from here to battle wildfires across the mountains of León and surrounding areas. It's a reminder that this modest lagoon plays a real role in the region well beyond the summer swimming season. How do you get there? The starting point is the village of San Martín de Valdetuéjar itself. Once in the village, head toward the left, in the direction of the local rural house (casa rural) and the village hermitage. From there, a path leads directly to the lagoons. The route is short and not particularly demanding, making it suitable for families with children and visitors with an average fitness level. Lagunas de San Martín sit roughly 3.5 kilometers from Puente Almuhey, the administrative capital of the Valderrueda municipality, making the site an easy day-trip destination. When should you visit? Summer is the best time to come, when high temperatures make swimming appealing and the surface water is at its most comfortable. This is also when the lagoons see their heaviest footfall, as visitors look for a cool escape away from the crowded coastal resorts. Keep in mind that the site's popularity has been growing year after year, so expect more company during peak season, especially on weekends. Frequently asked questions Can you swim at Lagunas de San Martín? Yes — two of the three lagoons are suitable for swimming. The third is too overgrown with fallen leaves for comfortable bathing. How far are the lagoons from the nearest larger town? They sit about 3.5 km from Puente Almuhey, the administrative capital of Valderrueda, and are within easy day-trip distance from León. Is the walk to the lagoons difficult? No. The path starts at the rural house and hermitage in San Martín de Valdetuéjar and is accessible to most visitors, including families with children. Why is the water so cold at depth? The lagoons formed inside former mining pits. The surface water warms quickly in the sun, but deeper down the water stays noticeably colder.
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Lagunas de Montañana
Miranda de Ebro
Lagunas de Montañana is a cluster of lagoons formed in former gravel pits along the Ebro River, right next to the small village of Montañana, part of the municipality of Miranda de Ebro (Burgos province, Castile and León). Where is it and how do you get there? Montañana sits about 7 km north of downtown Miranda de Ebro, on the BU-735 road between the villages of Guinicio and Suzana. The settlement stretches along the bank of the Ebro River — the province of Álava begins right on the opposite shore. From Miranda de Ebro it's a short drive of a few minutes, and the route is also walkable or bikeable along local paths that follow the riverbank. How did the lagoons form? The lagoons, known locally as Lagunas de los Yelsos, formed in a meander of the Ebro on the site of old gravel quarries. Once extraction stopped, the pits gradually filled with water and became a network of calm, shallow lakes. It's a landscape typical of the Ebro valley: a post-industrial site that, over time, turned into a valuable wetland. What will you find there? Despite visible traces of past gravel extraction, the surrounding area has kept real ecological value. Patches of melojo oak woodland survive among the farmland, and lush riverside vegetation lines the banks of the Ebro. The lagoons and the adjoining river stretch make for good waterbird watching — the calm surface draws a good variety of species, which birdwatchers will appreciate. In the village itself, look out for the parish church of San Andrés, whose structure blends elements from the 13th to the 18th century, and a striking, centuries-old ash tree that serves as a local landmark. What trails run through the area? Montañana lies along the long-distance trail "Agua y Roca: Del Ebro a los Obarenes," roughly 60 km long, linking the Obarenes mountains with the Ebro valley between Pancorbo and Miranda de Ebro. The route also passes through neighboring Suzana and other small villages in the Miranda de Ebro district. The stretch along the right bank of the Ebro opens up wide views over the river valley and chances to spot local flora and fauna, from waterbirds to native riverside plants. It works well both for a short walk around the lagoons and for hikers tackling a longer section of the trail. When should you visit? Spring and autumn offer the best conditions for visiting and birdwatching, with mild temperatures and stable water levels in the lagoons. Summers in the Ebro valley can get hot, though the shade of riverside trees softens the heat along the walking routes. Winter is quieter, though several waterbird species stay in the area year-round. Frequently asked questions How far is it from Miranda de Ebro to the lagoons? About 7 km along the BU-735 road heading north, toward Guinicio and Suzana. Is it suitable for a walk with children? Yes, the ground around the lagoons is flat and easy to access, though care is needed close to the water's edge. Can you go birdwatching there? Yes, the calm waters of the lagoons attract waterbirds, making the site a popular spot among nature observers. What else is worth seeing in Montañana itself? The parish church of San Andrés (13th–18th century) and the distinctive, centuries-old ash tree in the village center.
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Albufera de Anna
Anna
Albufera de Anna is a natural spring-fed lake sitting right next to the village of Anna, in the Canal de Navarrés region, roughly 70 km inland from Valencia. The lake stretches close to 300 metres in length and 180 metres across, fed by underground springs rising through the rocky ground. How do you get there? Anna sits inland in Valencia province, well away from the coast. Driving is by far the easiest option — from Valencia city the trip takes around an hour. The village itself is small, and the lake lies about a kilometre from the centre, reachable on foot or by bike along a clearly marked path. What will you see at the lake? An easy path circles the entire lake, flat enough for almost anyone to manage without difficulty. Along the way there are shaded viewpoints, benches and green picnic areas. The water is home to ducks, geese and other waterfowl, along with barbel and trout. Swimming directly in the lake itself is not permitted, but right beside it sits a natural pool fed by a small cascade tumbling over the rocks, and a municipal pool with lifeguards operates through the summer season, from late June until September. Since August 2024, boat rides have been running on the lake from Wednesday to Sunday, between 12:30 and 19:15. Half an hour costs five euros, with each boat carrying up to four people. Nearby stands El Laberinto del Lago, one of the largest hedge mazes in Europe, a popular stop for families travelling with children. Anna itself has more to offer beyond the water. The village name has Arabic roots and translates to "water", fitting given how many springs and fountains dot the surroundings, among them the Fuente de Santa María and the Balsa de Abajo. At the centre of town stands the Palace of the Counts of Cervellón, whose architecture has earned Anna the nickname "the Valencian Alhambra" — visiting the interior requires booking ahead through the local tourist office. The hermitage of Santísimo Cristo de la Providencia is also worth a stop. When is the best time to visit? Summer is the obvious choice for swimming and boat rides, though it also draws the largest crowds, especially on weekends. Spring and early autumn suit hikers better, with trails winding through nearby gorges and past waterfalls — temperatures are milder and the scenery just as striking. The site is well equipped for visitors: restrooms, restaurants and terrace bars, a children's playground and picnic tables scattered around the grounds. A campsite sits about 50 metres from the shore, making the lake a solid base for a longer stay in the area. Frequently asked questions Can you swim in Albufera de Anna? No, swimming in the lake itself is banned year-round. A natural pool fed by a cascade sits right next to it, along with a municipal pool open from late June through September. How much does a boat ride cost? Half an hour on the water costs five euros, with each boat holding up to four passengers. Rides run Wednesday through Sunday, from 12:30 to 19:15. How long does it take to walk around the lake? The loop trail is short and flat, usually taking no more than 30 to 40 minutes at a relaxed pace. What else is worth seeing in Anna besides the lake? The Palace of the Counts of Cervellón, known locally as the "Valencian Alhambra", the hermitage of Santísimo Cristo de la Providencia, and El Laberinto del Lago, a large hedge maze near the shore.
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Estany d'Eixerola
la Torre de Cabdella
Estany d'Eixerola is a glacial lake in the municipality of la Torre de Cabdella, tucked into the Vall Fosca valley in the Lleida Pyrenees. Sitting at 2,351 metres above sea level, northeast of the village of Capdella, it lies within the peripheral zone of the Aigüestortes i Estany de Sant Maurici National Park. What will you find at the lake? Eixerola covers just under 7 hectares and stretches about 385 metres in length — one of the smaller lakes in this stretch of the Pyrenees, but no less scenic for it. Since the construction of the Estany de Cubieso dam, its waters have merged with the neighbouring reservoir, forming a single larger mountain basin ringed by rocky ridges and high-Pyrenean vegetation. The lake belongs to a remarkable network known as the estanys de Cabdella — twenty-seven glacial lakes linked by underground tunnels. The system dates back to the early 20th century (1911–1916), built alongside the Capdella hydroelectric power station. The lakes served a dual purpose: generating power and regulating water flow between reservoirs, with Estany Gento acting as the system's central hub. It's a rare case of century-old hydroelectric infrastructure woven directly into a high-mountain landscape. How do you get to Estany d'Eixerola? The village of Capdella, in the municipality of la Torre de Cabdella, is the natural starting point for exploring the area. From there, hiking trails connect the various lakes of the Cabdella system, with routes of varying difficulty popular among trekkers and mountain hikers. A cable car — the Vall Fosca cremallera — helps visitors reach the higher parts of the valley, leading toward Estany Gento, from where further hikes branch out to the surrounding lakes, Eixerola included. When is the best time to visit? The ideal window runs from June to October, when trails are clear of snow and weather conditions in the high Pyrenees are favourable for long hikes. Outside that period, snow at altitudes above 2,000 metres makes the approach routes considerably tougher. Who is this destination for? Given the altitude and the need to hike in (or take the cable car partway), Eixerola is best suited to visitors who enjoy high-mountain trekking and landscape photography. It also rewards anyone with an interest in industrial heritage — the combination of a natural lake with century-old hydroelectric infrastructure is an unusual pairing in the Pyrenees. Frequently asked questions Is Estany d'Eixerola a natural lake? Yes, it's a glacial lake, though its current shape and its merger with the neighbouring reservoir are the result of the Estany de Cubieso dam, built as part of the Cabdella hydroelectric system. How many lakes make up the Cabdella system? Twenty-seven lakes, connected by underground tunnels built for the Capdella hydroelectric power station between 1911 and 1916. Can you drive to the lake? Not directly — access is on foot via hiking trails from around Capdella, partly aided by the Vall Fosca cable car. Is the lake inside a national park? It lies within the peripheral zone of the Aigüestortes i Estany de Sant Maurici National Park, one of the most ecologically valuable areas of the Pyrenees.
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Lagunas de Suzana
Miranda de Ebro
Lagunas de Suzana is a small group of lagoons near the village of Suzana, part of the municipality of Miranda de Ebro in the province of Burgos, just a few kilometers from the city center. The site has an unusual origin story: the ponds formed on the site of a former mining excavation that, once abandoned, gradually filled with water and turned into a natural wetland. How do you get there? The lagoons lie about 5 km from Miranda de Ebro, between the villages of Ayuelas and Suzana. The easiest way to reach them is by car along the local road connecting the city to these villages, then continuing the last stretch on foot or by bike — the terrain around the lagoons is flat and requires no special preparation. The spot is a popular destination for locals from Miranda de Ebro looking for a nature escape without traveling far. What will you see? The main draw here is birdlife. Since the old excavation site filled with water, the lagoon has been colonized by hundreds of species of waterbirds and migratory birds — grebes, cormorants, herons, storks, ducks, and coots have all been recorded here, alongside birds of prey and passage migrants stopping to rest or overwinter. The number of species recorded is notably higher than the average for surrounding areas, making Suzana one of the more interesting birdwatching spots in the region. It's worth knowing that in 2019 part of the lagoons suffered damage after being illegally filled with construction rubble, reducing the area's surface. The companies responsible were convicted by a court in Miranda de Ebro for environmental crimes. The episode is a reminder of how fragile — and valuable — this ecosystem is, and how important its protection remains; today the site continues to draw nature lovers and birdwatchers alike. When should you visit? The best time to visit is during bird migration seasons — spring and autumn — when the lagoons fill with passage species stopping to rest. Winter is also rewarding, as many waterbirds spend the cold months here. Summer tends to be quieter in terms of species diversity, but it's a pleasant time for a walk by the water with longer days and warmer weather. Who is it for? Lagunas de Suzana suits anyone looking for a peaceful nature spot close to the city — birdwatchers, nature photographers, cyclists, and casual walkers alike. It's also a compelling example of nature reclaiming land after industrial use, a backstory worth knowing before you go. Frequently asked questions Is there an entrance fee for the lagoons? No, it's an open natural area, free to visit for walkers and birdwatchers. How long does a visit take? Walking around the lagoons and birdwatching usually takes between 1 and 2 hours, depending on your pace and how many stops you make. Do you need special equipment for birdwatching? It's not required, but binoculars make it much easier to spot waterbirds and migratory species that keep their distance from the shore. Are the lagoons safe and accessible year-round? Yes, the site is accessible all year, though conditions and the variety of birds you'll see change with the seasons, especially during migration periods.
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Estany de la Collada
la Vall de Boí
Estany de la Collada is a high-mountain glacial lake in the municipality of la Vall de Boí, in the Alta Ribagorça county, sitting inside the Aigüestortes i Estany de Sant Maurici National Park in the Catalan Pyrenees. Where exactly is Estany de la Collada? The lake sits at an altitude of 2,453 metres, in the side valley of Vall de Morrano, surrounded by the rocky, high-alpine terrain typical of this part of the park. Its outflow runs west, feeding the Barranc de Morrano stream. Nearby landmarks help with orientation: Pala de Morrano rises to the northwest, the Collada pass to the northeast, and the Pic de Dellui peak to the southeast. A smaller neighbouring pool, Estany Xic, lies a little further to the south-southeast. How big is the lake? Estany de la Collada is modest in scale compared with some of the park's better-known lakes: it covers roughly 1.6 hectares and reaches a maximum depth of about 15 metres. That size gives it a more intimate feel than the broad estanys found deeper in the park's core, while still showing the clear water and rocky shoreline typical of glacial lakes at this altitude. Can you hike there? The lake sits along a route that links several high-altitude lakes in this part of Vall de Boí — trails through the Vall de Morrano area make it possible to visit Estany de la Collada together with neighbouring lakes such as the estanys de Delluí in a single outing. Given the altitude (over 2,400 metres) and rocky ground, reaching it calls for reasonable fitness and proper trekking footwear: this is mountain terrain, with uneven paths and the changeable weather typical of the high Pyrenees. Why visit this particular lake? For anyone planning a hike through the Aigüestortes i Estany de Sant Maurici National Park, Estany de la Collada offers a quieter alternative to the park's most famous lakes. It shows the same glacial scenery that defines the area, but with far fewer visitors along the way. The surrounding ridges and mountain pass frame a landscape characteristic of the highest reaches of the Catalan Pyrenees. Frequently Asked Questions How high up is Estany de la Collada? The lake lies at 2,453 metres above sea level, in the Vall de Morrano. How large is the lake? It covers about 1.6 hectares and reaches a maximum depth of roughly 15 metres. Which national park is it part of? Estany de la Collada lies within the Aigüestortes i Estany de Sant Maurici National Park, in the municipality of la Vall de Boí. Are there other lakes nearby? Yes — the same valley and trail also lead to Estany Xic and the estanys de Delluí, making it possible to plan a longer route covering several lakes in one trip.
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Lagunas de Valcabadillo
Tubilla del Lago
Lagunas de Valcabadillo is a small cluster of three restored lagoons in the municipality of Tubilla del Lago, in the province of Burgos, right in the middle of the Ribera del Duero wine region in Castilla y León. What exactly is this place? The site is made up of three water basins of different sizes, covering roughly 23,000 m² in total. The water is shallow throughout, with an average depth of about 1.5 metres, though some spots go deeper. The land itself sits on an old calcareous peat bog that had dried out over the years as farmers drained it for agricultural use, eventually disappearing as a wetland altogether. Why "restored" and not just "natural"? What looks like an untouched natural landscape today is actually the result of a targeted restoration project. Work to bring the water back to this site started in mid-August 2007 and wrapped up about a month later, with a total investment of 350,000 euros. The goal was straightforward: recover a wetland that had vanished due to agricultural drainage, returning the area to something closer to what it once was before it was drained and farmed. What kind of wildlife lives here? Lagunas de Valcabadillo now functions as a designated bird-watching area. The reconstructed basins act as a refuge for waterfowl and amphibians, species that had lost this habitat once the original wetland dried up decades earlier. That's the main draw for visitors who come specifically to watch birds, even though the lagoons themselves cover a fairly small area. How do you get there, and what is the Gromejón trail? The lagoons mark the end point of a walking trail that follows the Gromejón river. The route starts in Tubilla del Lago, passes through Villalbilla de Gumiel, and finishes at the lagoons after close to 14 km on foot. It's a genuine hiking option for anyone planning a longer walk in the area, not just a quick roadside stop. The site itself is wheelchair accessible, with an adapted entrance and accessible parking. It's open around the clock, every day of the week, and there's no admission charge. The paths around the lagoons are easy and manageable with children, so no special fitness or gear is needed for a visit. Is it worth a stop? Visitors describe the spot as quiet and rarely crowded, with a decent view over the water and the surrounding farmland. This isn't a full-day destination, but it's a solid short break on a Ribera del Duero itinerary, especially for anyone interested in waterbirds or simply looking for some quiet away from busier tourist spots. Frequently Asked Questions Is there an entrance fee for Lagunas de Valcabadillo? No, access is free and the site is open 24 hours a day, every day of the week. Are the lagoons a natural feature? Not entirely — this is a reconstructed wetland. The area had dried out over the years due to agricultural drainage, and the water was brought back in 2007 as part of a restoration project. Can you walk to the lagoons from Tubilla del Lago? Yes. The lagoons sit at the end of a trail along the Gromejón river that starts in Tubilla del Lago and runs roughly 14 km one way through Villalbilla de Gumiel. Is the site accessible for wheelchair users? Yes, both the entrance and the parking area are adapted for visitors with reduced mobility.
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Fuentes Blancas wetland
Burgos
Fuentes Blancas wetland sits inside Fuentes Blancas park on the eastern edge of Burgos, roughly 6 km from the city centre, where the small Pico stream meets the Arlanzón river. Where the wetland sits The wetland occupies the eastern fringe of the city, within the larger Fuentes Blancas park that runs along the Arlanzón riverbank. The N-120 road borders it on one side and the northern motorway on the other, yet the site still reads as a quiet green pocket rather than a roadside strip — an easy walk or bike ride without leaving the city limits. History and the recent restoration The wetland began life as an old meander of the Arlanzón that dried out once nearby road works cut it off from the river. Efforts to bring it back as a flooded habitat started in 2002, with paths, bird-watching hides, and a perimeter fence added to keep visitors from disturbing the plants and animals. More recently, the city of Burgos carried out a further round of works: a new channel now links the wetland directly to the main Arlanzón channel, giving it a steady water supply instead of relying only on rainfall or occasional high river levels. Wildlife and birdwatching Vegetation around the water follows a typical riverside pattern — poplar, willow, ash, and alder mix with pine and juniper on the drier ground, while reeds, rushes, and bulrush line the water's edge. With more than 30 hectares of water and vegetation, the site draws waterbirds and wading species, making it one of the better birdwatching spots near the city, particularly from the marked observation points set back from the water. What else Fuentes Blancas park offers The name Fuentes Blancas comes from the natural springs scattered across the site, among them Prior, Salud, and Los Castaños. The wetland is only one part of a much larger green area that forms part of the belt of parkland ringing Burgos. Beyond the water, the park has a man-made river beach, a large children's playground, picnic and barbecue spots, a cycling path, and a campsite with a swimming pool. That mix pulls in both families planning a full day out and visitors who just want to walk the wetland trails. Frequently Asked Questions How far is the Fuentes Blancas wetland from central Burgos? About 6 km, on the eastern edge of the city along the Arlanzón riverbank — a short drive or a ride along the marked cycle path. Is it worth a special trip for birdwatching? Yes. The site covers more than 30 hectares of water and riverside habitat, and the marked observation points let you watch waterbirds without disturbing them. Where does the name Fuentes Blancas come from? From the natural springs found on site, including Prior, Salud, and Los Castaños, which gave the whole park its name. Is there anything for children beyond the wetland itself? Yes — the wider park has a large playground, a river beach, picnic and barbecue areas, and a campsite with a pool, so a visit can easily fill a whole day rather than just a walk around the water.
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Lagunas del Raso de Portillo
La Pedraja de Portillo
Lagunas del Raso de Portillo is a wetland area in the municipality of La Pedraja de Portillo, in the province of Valladolid, Castile and León. Where are the lagoons and how do you get there? The site lies roughly 2 km from the centre of La Pedraja de Portillo, on the boundary with the municipality of Aldeamayor de San Martín, in a spot known locally as Dehesa de los Caballeros. Road signs at the entrance to town point the way to a parking area, from which several wide, unpaved paths lead on to a series of observation points. The route runs as a loop and is described as suitable for walking, cycling, and wheelchair use. How did these lagoons come to exist? The whole Raso de Portillo plain, once close to 1,900 hectares of open wetland, was drained between 1870 and 1873 through a 12-kilometre main channel carrying water to the river Cega, plus eight secondary channels adding up to 18 km. The drainage was meant to open up land for farming and reduce malaria in the area. The three small lagoons visible today - covering roughly 8, 2.8, and 0.7 hectares - are the result of restoration work carried out since 2012 by the Confederación Hidrográfica del Duero, the authority responsible for the Duero river basin, under its second river-bank restoration plan. The same body still manages the site. The lagoons sit on either side of the Arroyo del Molino, a tributary of the Cega, surrounded by dryland crop fields. What birds can be seen here? The combination of open water and steppe farmland makes the site popular with birdwatchers. Recorded species include great bustard, white stork, black-winged stilt, herons, coot, buzzard, teal, marsh harrier, red-legged partridge, plover, lapwing, bee-eater, and avocet, along with occasional sightings of Spanish imperial eagle, little grebe, mallard, shoveler, and gadwall. Six hides connected by a footpath let visitors watch the birds without disturbing them. When is the best time to visit? The lagoons can be visited year-round, though autumn and winter bring the highest numbers of waterbirds, when migrating and wintering species settle on the water. Spring and autumn migration windows also raise the odds of spotting less common species. The terrain is flat, open, and largely without shade, so binoculars or a spotting scope and some sun protection are worth bringing - the water can be some distance from the paths. Frequently Asked Questions How do you get to Lagunas del Raso de Portillo? The route is signposted from the entrance to La Pedraja de Portillo. A car park sits by the lagoons, about 2 km from the town centre, with a path leading on to the observation points. Are the lagoons natural? Not entirely - the area was a historic wetland drained in the 19th century, and the current lagoons were created through restoration work carried out from 2012 onward. Is the trail wheelchair accessible? Yes, the paths are wide and unpaved, and are described as suitable for walking, cycling, and wheelchair use. What birds are most typical of this site? Steppe species such as great bustard in the surrounding fields, and on the water itself coots, herons, ducks, and waders depending on the season.
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Besiberri Lake
Vilaller
Besiberri Lake is a glacial mountain lake in the municipality of Vilaller, in the Alta Ribagorça region of Catalonia, sitting on the western edge of the Aigüestortes i Estany de Sant Maurici National Park. Carved out by ancient glaciers that shaped this high-mountain landscape, the lake rests at the foot of the Besiberri Massif, one of the most distinctive mountain groups in the central Pyrenees. How do you get there? Most hikers start from the Vilaller area or from Refugio de Conangles, following the trail up the Vall de Besiberri. The route from Conangles to the lake runs roughly 12.4 km round trip and passes Refugi Nou de Besiberri, spreading the climb over a longer but gentler approach. A shorter option also exists, around 6.3 km with about 495 meters of elevation gain — a good choice for those who want to reach the lake without committing to a full-day trek. Much of the path runs through forest, offering welcome shade on hot days, and along the way you'll pass several waterfalls fed by melting snow from higher up the massif. What will you see once you're there? As the trail breaks out of the tree line, the lake opens up ahead, framed by a rocky cirque and the peaks of the Besiberri Massif. On clear days, you can also make out Aneto, the highest peak in the Pyrenees, along with the ridge of Serra del Molar Gran. The water carries the characteristic cold, clear tone typical of glacial lakes fed by melting snow and ice. The surroundings are wild and largely untouched, making this a rewarding stop for lovers of high-mountain nature and landscape photographers alike. When is the best time to visit? Summer, from June through September, is the best window — trails are clear of snow and weather in the higher reaches of the Pyrenees is at its most stable. Earlier in spring, snowmelt feeds the waterfalls along the route, but higher sections of the path can still hold snow, making the going tougher. Autumn tends to be quieter in terms of visitor numbers, though mountain weather can shift quickly, so it's worth checking the forecast before setting out. Frequently asked questions Is the hike to the lake difficult? The shorter route (about 6.3 km, 495 m of elevation gain) is considered a moderate hike, manageable for anyone with average fitness. The longer approach via Refugio de Conangles takes more time but follows a gentler gradient. Is there anywhere to stay overnight near the lake? Yes, the area has mountain refuges, including Refugio de Conangles and Refugi Nou de Besiberri, which serve as rest stops for hikers continuing further into the massif. Can you swim in the lake? Given its glacial origin, the water stays very cold year-round, so swimming isn't really the draw here — most visitors come for the views and the trekking rather than a dip. Is the trail suitable for children? The shorter, forest-shaded option can work for older children used to mountain hiking, but given the elevation gain and rugged terrain, it's worth planning the timing carefully and staying cautious.
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estany de la Coma d'Amitges
la Vall de Boí
Estany de la Coma d'Amitges is a glacial mountain lake in the municipality of la Vall de Boí, within the Aigüestortes i Estany de Sant Maurici National Park, in the Alta Ribagorça district. The lake sits at roughly 2,269 metres above sea level, in the lower part of the Coma d'Amitges valley, surrounded by the rocky ridges and alpine meadows typical of this stretch of the Pyrenees. What will you see? The lake has the classic look of a high-mountain glacial tarn — clear, cold water framed by bare rocky slopes, with no buildings or tourist infrastructure right at the shore. Coma d'Amitges is actually a small cluster of interconnected lakes linked by streams, making it a rewarding spot for hikers interested in high-altitude trekking. Water flows in from Barranc de Cometes to the south and from the neighboring Estany Perdut to the southeast, then drains out from the lake's northeastern end toward Barranc de la Coma d'Amitges, which continues north and joins Barranc de Peixerani. How do you get there? Two main hiking routes lead to the lake. The first follows Barranc de la Coma d'Amitges, climbing up from the area around Estany Llong. The second follows the Barranc de Peixerani valley toward Estany Nere, then turns southwest toward Coma d'Amitges. Both approaches demand decent fitness and preparation for high-mountain conditions — the terrain is rocky, and Pyrenean weather can shift quickly even in summer. When should you visit? Summer, from June to September, is the best window, when the trails are free of snow and temperatures suit long hikes. Earlier spring and late autumn visits risk lingering snow on the upper stretches, which can slow or block the approach. Plan for a full day, since reaching the lake from the nearest trailheads typically takes several hours each way. Frequently asked questions Is Estany de la Coma d'Amitges easy to reach? No — it's a high-mountain lake reachable only on foot, requiring a hike of several hours from either Estany Llong or Estany Nere. Are there other lakes nearby? Yes, Coma d'Amitges is an area with several interconnected lakes, including Estany Perdut, which feeds water into this one. Is the lake inside a national park? Yes, it lies within the Aigüestortes i Estany de Sant Maurici National Park, one of the best-known protected areas in the Spanish Pyrenees. What is the lake's elevation? It sits at around 2,269 metres above sea level, a typical altitude for a high-mountain lake in this range.
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Arquillo de San Blas reservoir
Teruel
Arquillo de San Blas is a reservoir on the Guadalaviar River, a few kilometers from Teruel, sitting where the river cuts through a rocky, canyon-like stretch of land. The dam was built in 1962 as a gravity structure 54 meters high with a 173.2-meter crown length. The reservoir it created covers 83 hectares and holds up to 22 hm³ of water, supplying drinking water to Teruel, powering the nearby Carburos hydroelectric plant, and irrigating surrounding farmland. For visitors, it's above all a peaceful spot for a hike, a picnic, and time spent along the Guadalaviar valley. How do you get there? The starting point is San Blas, a small district or village a few kilometers from central Teruel. From there, a marked walking trail follows the riverbed all the way to the dam and reservoir. Driving from Teruel takes roughly fifteen minutes, and there's parking near the reservoir for those who prefer to head straight to the water. What will you see? The main draw is the dam itself — a massive concrete structure spanning the Guadalaviar gorge — and the reservoir behind it, which glows a striking blue against the pale, rocky slopes when the weather is good. The trail from San Blas crosses footbridges over the riverbed, passing natural pools carved into the rock and small cascades along the way. The landscape is typical of the Teruel highlands: dry, stony Mediterranean scrub contrasting with a lush green strip that follows the river. At the reservoir itself, you'll find open water framed by hills, and on a good day, kayakers or pedal boats out on the surface. What hiking route leads to the reservoir? The best-known route runs from San Blas to Arquillo, covering about 8.2 kilometers (one way or as a loop, depending on the variant chosen) with only 174 meters of total elevation gain. It's an easy trail suited to families and casual walkers — no special fitness or preparation required — and its biggest appeal is how close it stays to the river, with footbridges, stone pools, and shade from trees lining the banks. What can you do at the reservoir? A picnic area with rest spots sits by the water, along with a small food stand for something to eat or drink after the walk. For those wanting to get on the water, kayak and pedal boat rentals are available on site, making it a popular way to spend a summer day away from the heat of the city. The area is also good for landscape photography, birdwatching along the shoreline, and simply relaxing in the shade at the water's edge. When should you visit? Spring and early summer are the best times to visit, when water levels are high, vegetation is green, and temperatures suit both hiking and water activities. In summer, midday heat typical of the Teruel highlands can be intense, so it's worth timing the trail for morning or late afternoon. Autumn brings a quieter atmosphere with fewer visitors, while in winter the reservoir is often nearly empty of people — appealing if you're after solitude, though some services like boat rentals may be closed for the season. Frequently asked questions How far is Arquillo de San Blas from central Teruel? The reservoir is a few kilometers from the city, about a fifteen-minute drive. You can also reach it on foot via the trail starting in the San Blas district. Is the hiking trail suitable for children? Yes, the roughly 8.2-kilometer route with just 174 meters of elevation gain is classified as easy and works well for families, though the distance may be a stretch for very young children. Can you swim or kayak on the reservoir? Yes, kayak and pedal boat rentals operate on site, making Arquillo a popular spot for summer water activities. What is the dam used for? Built in 1962, the dam supplies drinking water to Teruel, powers the Carburos hydroelectric plant, and feeds irrigation systems in the surrounding area.
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estany de l'Illa
Alt Àneu
Estany de l'Illa is a small glacial lake in the Vall de Gerber, within the municipality of Alt Àneu in Pallars Sobirà, in the Spanish Pyrenees. Sitting at 2,453 metres above sea level on the edge of the Aigüestortes i Estany de Sant Maurici National Park, it belongs to a family of high-mountain lakes that draw hikers looking for quiet trails away from the park's busiest corners. What will you see at the lake? Estany de l'Illa covers roughly 2.45 hectares, stretching 215 metres in length and 162 metres in width, with a shoreline of just under 700 metres. Its bed is granite, typical of this part of the Pyrenees, and it's fed by runoff from the slopes of the Los Tres Puis massif, which rises to 2,824 metres. The surrounding landscape is stark high-mountain terrain — bare granite slopes, sparse alpine vegetation, and open views toward the neighbouring peaks. The lake drains into the nearby Estany Redó, from where the water flows into the Noguera Pallaresa river and eventually into the Segre-Ebro system. How do you get there? The main approach trail runs about 11.26 km round trip, requiring roughly 6 hours to complete. The route crosses genuine high-mountain terrain, so it calls for solid fitness, proper trekking footwear, and a weather check beforehand — conditions in the higher reaches of the Pyrenees can shift quickly. Near the lake stands the Refugi de Gerber-Mataró, a mountain hut that can serve as a rest stop or waypoint along the way. When is the best time to visit? Given the altitude and alpine character of the terrain, summer through early autumn is the best window, when the trails are clear of snow and daylight hours are long enough for a comfortable round trip. In spring and late autumn, snow can still linger in the upper valley, making the approach considerably harder. Who is this hike for? This is a route for experienced hikers used to multi-hour treks in mountain terrain. The reward is a quiet high-altitude lake, raw views of the Los Tres Puis massif, and a real sense of distance from the crowds that gather in summer at the more famous corners of the Aigüestortes National Park. Frequently asked questions How long is the trail to Estany de l'Illa? The main approach trail is about 11.26 km round trip and takes roughly 6 hours to walk. Is there anywhere to stay near the lake? The Refugi de Gerber-Mataró mountain hut sits nearby and can serve as a base or rest stop. Is the lake inside the national park? Estany de l'Illa lies on the edge of the Aigüestortes i Estany de Sant Maurici National Park, surrounded by typical high-mountain scenery for the region. Where does the lake's water come from? It's a glacial lake fed partly by runoff from the Los Tres Puis massif (2,824 m); excess water drains toward Estany Redó and on into the Noguera Pallaresa.
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Conjunt de Romedo: Romedo de Dalt, Colatx, Guiló de Baix
Lladorre
Conjunt de Romedo: Romedo de Dalt, Colatx, Guiló de Baix is a cluster of glacial high-mountain lakes in the municipality of Lladorre, in the Vall de Cardós (Pallars Sobirà, Catalonia). The lakes sit between 2,000 and 2,200 metres above sea level, at the headwaters of the Noguera de Cardós river, surrounded by the Pyrenean peaks of Pic de Turguilha (2,521 m) and Pic de Tres Comptes (2,671 m). What does this group of lakes include? The name covers several lakes sharing a single 156-hectare basin oriented north to south. The largest, Romedo de Dalt, sits at 2,108 m, covers 12.29 hectares and stretches 477 metres — its outflow feeds the Romedo river. Further down, at 2,007 m, lies Romedo de Baix, covering 9.66 hectares with a capacity of 0.53 hm³, collecting water from both the Guiló and Romedo basins. Colatx and Guiló de Baix are considerably smaller — just over 2 hectares each and shallower — but form a natural link along the route connecting the two larger lakes. How do you get there? The usual starting points for exploring the lake cluster are the Montalto dam or the area around Pla de Boavi, from where footpaths climb into the Cardós valley. A popular circular route follows the Llurri trail and links Romedo de Dalt, Senó, Colatx, Guiló and Romedo de Baix in a single, multi-hour outing. Given the altitude (over 2,000 m) and terrain, this is a route for hikers with solid fitness and mountain experience — an early start is recommended, leaving enough daylight for the return. What will you see along the way? The scenery is classic high Catalan Pyrenees: rocky ridgelines, alpine meadows and a string of lakes ranging through shades of turquoise depending on the time of day and light. Water from Romedo de Dalt flows down into Romedo de Baix, forming the Romedo river, which later joins the Broate river to create the Noguera de Cardós — a useful landmark for orientation on the trail. The area sees far less foot traffic than better-known Pyrenean routes, making it a good choice for quieter hiking and wildlife spotting. When is the best time to visit? The lakes are best visited between June and September, once snow has cleared from the high trails and Pyrenean weather is at its most stable. Early summer often brings the highest water levels, which brings out the lakes' colour most vividly. Autumn tends to be quieter on the trail, but conditions become less predictable, so checking the forecast and trail status beforehand is worthwhile. Frequently asked questions How many lakes make up the Romedo cluster? The name primarily refers to three lakes — Romedo de Dalt, Colatx and Guiló de Baix — though Romedo de Baix sits in the same basin and is included in the popular circular route linking them all. How long is the loop around the lakes? It's a multi-hour mountain hike, typically a full day out, starting from the Montalto dam or near Pla de Boavi and returning via the same or a circular route. Is the hike difficult? Yes — with an altitude above 2,000 m and rugged mountain terrain, it requires good fitness, proper hiking footwear and prior high-mountain hiking experience. Where do the lake names come from? The names come from local toponyms in the Vall de Cardós — Romedo, Colatx and Guiló are long-established place names used by residents of Lladorre.
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estany Negre de Dalt
Alt Àneu
Estany Negre de Dalt is a glacial mountain lake in the municipality of Alt Àneu, in the Pallars Sobirà region of the Catalan Pyrenees. Where exactly is it? Sitting at an altitude of 2,440 metres, the lake occupies the head of the Gerber valley, within the peripheral (buffer) zone of Aigüestortes i Estany de Sant Maurici National Park. It's a compact body of water, covering under a hectare (around 0.93 ha), tucked into a rocky basin carved out by glacial action. Right nearby, lower down the same valley, sits Estany Negre de Baix — a separate lake whose near-identical name makes it easy to confuse with the one described here, even though the two are entirely distinct bodies of water. How do you get there? Access typically starts from the Alt Àneu area, following trails that climb toward the Coll de l'Estany Gelat pass. Close to this pass stands the Mataró mountain refuge (Refugi Mataró), a well-known stopover and orientation point for hikers heading further into the high peaks. The approach is a genuine mountain hike across open, rocky terrain with no shelter from the weather, so sturdy trekking boots, layered clothing and a reasonable level of fitness are essential. What will you find there? Estany Negre de Dalt is a classic Pyrenean "estany" — a small glacial tarn ringed by bare rock and high-altitude scree typical of the upper Pyrenees. Sitting within the national park's buffer zone, the surroundings remain largely untouched, with no tourist infrastructure beyond the trail itself and the nearby refuge. It suits hikers looking for solitude, wide-open landscape photography, and a chance to spot high-mountain flora and fauna, rather than travellers after easy, ready-made attractions. When's the best time to visit? Given its altitude above 2,400 metres, the lake is realistically accessible only in summer, from around June/July through September/October, once the trails have cleared of snow. Spring and autumn weather in this part of the Pyrenees can turn abruptly within hours, and winter access requires proper mountaineering equipment and experience. Morning is generally the best time to visit, when the lake surface tends to be calmest and the light works best for photography. Frequently asked questions Is Estany Negre de Dalt the same lake as Estany Negre de Baix? No. They are two separate lakes in the same area — "de Dalt" means "upper" and "de Baix" means "lower." Despite the proximity and similar names, they're distinct bodies of water, each with its own character. Is the lake inside the national park itself? It lies within the peripheral zone of Aigüestortes i Estany de Sant Maurici National Park, not the core protected area. Is there anywhere to stay nearby? Yes — the Mataró refuge (Refugi Mataró) sits close to the Coll de l'Estany Gelat pass and serves as a common base for hikers exploring the surrounding peaks. How long does the hike to the lake take? It's a high-mountain route that usually requires several hours of ascent from the lower valley, with the exact time depending on your starting point and fitness level.
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As Pontes Lake
As Pontes de García Rodríguez
As Pontes Lake is an artificial lake located in the municipality of As Pontes de García Rodríguez, in Galicia, in northwestern Spain. Formed in the basin of a former mining site, it is now one of the largest bodies of water of its kind in the region, drawing both local residents and visitors looking for a quiet inland alternative to the Galician coast. What can you see at the lake? The lake fills a broad natural bowl surrounded by the gentle hills typical of inland Galicia. Its waters are notably calm, with little current or wave activity, so the surface often looks like glass, especially in the early morning. A walking and cycling path circles the shoreline, offering wide views across the water and the greenery beyond it. The area has been developed for family-friendly recreation, with viewpoints, benches, and green spaces suited to a relaxed picnic stop. Birdwatchers will find the calm surface attractive to waterfowl, particularly during migration periods. The contrast between the still water and the rolling Galician countryside also makes for striking photography, especially around sunset. How do you get to As Pontes Lake? The lake sits right next to the town of As Pontes de García Rodríguez, in the province of A Coruña. The easiest way to arrive is by car — the town lies along the main roads connecting the coast with inland Galicia, and the drive from A Coruña or Ferrol takes a little over half an hour. From the town centre, the shoreline is only a few minutes away on foot or by car, making it an easy stop even for a short afternoon visit. Travellers without a car can reach As Pontes on regional bus services and then walk to the lake, since the town itself is compact enough that no further transport is needed once you arrive. When is the best time to visit? Spring and summer are the most rewarding seasons, with longer daylight hours and comfortable temperatures for walking and outdoor activities. During these months the lake is at its liveliest, with locals jogging, cycling, and families spending time in the surrounding green spaces. Autumn and winter bring a quieter atmosphere and misty, atmospheric mornings that landscape photographers tend to appreciate. Early morning or early evening visits generally offer the best light and, during the summer months, cooler temperatures for walking the shoreline path. Frequently asked questions Can you swim in the lake? The lake mainly serves a recreational and scenic purpose, so it is worth checking the signage and rules in place on site before planning to swim. Is the lake accessible for cyclists and pedestrians? Yes, a path circles the lake and is suitable for walking or cycling, welcoming visitors of all ages. Are there places to rest or picnic nearby? Yes, the surrounding area includes green spaces with benches and viewpoints, ideal for a break during your visit. How long does it take to see the lake? A walk along the main viewpoints usually takes between 30 minutes and an hour, depending on your pace and how many stops you make for photos.
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estany Gémena de Baix
la Vall de Boí
Estany Gémena de Baix is a glacial mountain lake in the municipality of la Vall de Boí, in the Catalan Pyrenees. It sits at 2,234 metres above sea level in the northeastern part of the Llubriqueto valley, right on the edge of Aigüestortes i Estany de Sant Maurici National Park. Its name comes from the Latin "stagna gemina" — "twin lakes" — a reference to its neighbour, Estany Gémena de Dalt, which lies higher up in the same valley. What will you see there? The lake covers just under 8 hectares and reaches a maximum depth of 21 metres. Water flows in from the north, fed by its twin lake Estany Gémena de Dalt, and drains out to the south toward the Llubriqueto waterfall. The setting is classic high-Pyrenean terrain — bare granite ridges, patches of mountain pine, and alpine meadows, with the lake's surface mirroring the surrounding peaks on clear days. How do you get there? There is no road access to Estany Gémena de Baix — reaching it means a multi-hour hike. The trail through the Llubriqueto valley is well marked but climbs steep sections, and the one-way walk takes roughly three hours. It's a route for hikers in good physical condition, with proper mountain footwear and some experience navigating high-altitude terrain. Most people set out from one of the villages in the la Vall de Boí municipality. When should you visit? The best window for this hike runs from June to October, when the trail is clear of snow and Pyrenean weather is more favorable for long mountain routes. Outside this period, lingering snow and harsher high-altitude conditions can make the approach difficult or unsafe. Frequently asked questions Can you drive to Estany Gémena de Baix? No — the lake sits in a remote part of the Llubriqueto valley and can only be reached on foot via the mountain trail. How long does the hike take? The one-way approach takes about three hours, depending on fitness and pace. How is it different from Estany Gémena de Dalt? The two lakes form a connected "twin" pair — Gémena de Baix lies at the lower elevation and receives the water that flows down from Gémena de Dalt above it. Is this hike suitable for beginners? It's a demanding route with steep climbs at high altitude, so previous experience with long mountain hikes is recommended before attempting it.
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estany Negre de Baix
Alt Àneu
Estany Negre de Baix is a small mountain lake in the municipality of Alt Àneu, in the heart of the Catalan Pyrenees. It lies within the Pallars Sobirà comarca, in the province of Lleida, in an area that largely overlaps with the Alt Pirineu Natural Park — one of Catalonia's largest protected natural areas. It's a destination for travelers looking for quiet, high-mountain scenery and a genuine escape from crowds. Where exactly is the lake? Estany Negre de Baix sits within the historic Valls d'Àneu region, centered on the upper course of the Noguera Pallaresa river. The name "de Baix" (meaning "lower") distinguishes it from the nearby Estany Negre de Dalt ("upper") — a pair of lakes with almost identical names but located at different elevations, which can easily cause confusion when planning a hike. It's worth keeping this distinction in mind from the start of your trip planning. How do you get there? The municipality of Alt Àneu includes several small villages — Isil, Alós d'Isil, Sorpe, and València d'Àneu — that traditionally serve as starting points for high-mountain trails in this part of the Pyrenees. From these villages, paths lead further into the valley toward the glacial lakes scattered across the higher parts of the massif. Given the alpine terrain, it's best to plan your route with a local guide or an up-to-date trail map from the Pallars Sobirà tourist information office — the terrain can be demanding, and waymarking is sparse at higher elevations. What will you see there? Estany Negre de Baix is a typical example of an alpine "estany" — a small glacial tarn, of which there are several hundred scattered across the Catalan Pyrenees. Its surroundings feature rocky ridges, high-altitude meadows, and traces of the traditional shepherding activity characteristic of the entire Alt Pirineu Natural Park. The dark, almost black tint of the water that gives the lake its name (negre means "black" in Catalan) comes from its depth and the dark-colored rock formations around it — a feature shared by many high-mountain lakes in the region. When should you visit? The high-mountain hiking season in the Catalan Pyrenees usually runs from June to September, once the snow has melted enough for trails to be passable and weather conditions to be stable. Outside that window, access can be significantly harder or require winter equipment. Summer is also when the surrounding villages — Isil, Sorpe, València d'Àneu — offer their full range of accommodation and dining options for hikers heading into the mountains. Frequently asked questions What's the difference between Estany Negre de Baix and Estany Negre de Dalt? They are two separate lakes within the same municipality of Alt Àneu — "de Baix" means lower, "de Dalt" means upper. Despite their proximity and similar names, they are distinct points on the map, so it's worth checking the exact location before setting out. Is the hike to the lake difficult? Like most high-mountain estanys in the Pyrenees, reaching it requires reasonable fitness and proper preparation — the terrain is mountainous and trails cross ground with variable relief. Are there places to stay nearby? Yes, the villages of the Alt Àneu municipality (Isil, Sorpe, València d'Àneu, Escaló) offer accommodation typical of Pyrenean tourist villages. Is the lake within a protected area? Yes, the municipality of Alt Àneu lies largely within the Alt Pirineu Natural Park, meaning additional nature-protection rules apply to visitors.
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Estany Morto
la Torre de Cabdella
Estany Morto is a glacial lake in the municipality of la Torre de Cabdella, deep in the Catalan Pyrenees, within the Pallars Jussà region. It sits in the high-mountain Tort-Morto cirque, just below the Pic Morto summit (2,869 m), in an area known for its dense cluster of glacial lakes and the wild alpine scenery of the Vall Fosca valley. Where exactly is Estany Morto? The lake lies at 42.5445 N, 0.9796 E, well within the high-altitude belt typical of this stretch of the Pyrenees. It's one of several small lakes forming the Tort-Morto cirque, right next to the far better-known Estany Gento, a common starting point for hikes into this side of the valley. The whole area borders the Aigüestortes i Estany de Sant Maurici National Park, one of Catalonia's most valuable natural landscapes. What makes this lake worth knowing about? Estany Morto isn't entirely untouched in its current form. Like other lakes in this part of Vall Fosca, it was tied into a network of underground channels built to feed the valley's hydroelectric plant. That system gathers water from six lakes across the Tort-Morto cirque and routes it downhill to lower reservoirs, turning the area into both a natural and an engineering curiosity — a physical trace of the early 20th-century hydroelectrification of the Pyrenees. Despite this human intervention, the landscape has kept its raw, high-mountain character: steep slopes, rocky ridgelines, and the clear, cold water typical of glacial lakes at altitude. How do you get to Estany Morto? Most visitors start from Cabdella or one of the small hamlets within the municipality of la Torre de Cabdella, where trails head up into Vall Fosca. Many hikers follow the route via Estany Gento — partly served by infrastructure linked to the hydroelectric works — before continuing the climb toward the Tort-Morto cirque. Given the high-altitude terrain, it's worth planning for a full day out, wearing proper hiking footwear, and checking the forecast, since weather in the Pyrenees can turn quickly. What will you see along the way? The route runs through classic Vall Fosca scenery: rocky ridges, alpine meadows, and a cascade of successive glacial lakes. The proximity of Pic Morto means the higher stretches of the trail open up wide views over the surrounding peaks and valley below. It's a spot favored by high-mountain trekkers and landscape photographers alike, especially outside the peak summer months when foot traffic thins out. When is the best time to visit? Summer, from June to September, is the best window, when trails are free of snow and weather conditions are most stable. In spring and autumn, snow can still linger in the upper reaches of the Tort-Morto cirque, making the approach harder. In winter, the area is effectively off-limits without proper mountaineering preparation and gear. Frequently asked questions Is Estany Morto a natural lake? Yes, it formed through glacial processes, though its water flow has been partly modified by the underground channels feeding the Vall Fosca hydroelectric scheme. Can you reach it without mountain hiking experience? The route calls for reasonable fitness and proper footwear — this is high-mountain terrain, so basic trekking preparation and a weather check beforehand are recommended. Are there other lakes worth seeing nearby? Yes, Estany Morto shares its cirque with five other lakes, plus the popular Estany Gento close by, making it easy to plan a longer route linking several of them. Is the lake inside a national park? It sits right next to the Aigüestortes i Estany de Sant Maurici National Park, which makes the area appealing for anyone planning a longer stay in the region.
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Estany de Castieso
la Torre de Cabdella
Estany de Castieso is a glacial lake in the municipality of la Torre de Cabdella, in the Vall Fosca valley, within the Pallars Jussà county of Catalonia, Spain. It sits along one of the region's most popular routes, the trail running from the Sallente reservoir toward Estany Gento and the Colomina mountain refuge, right on the edge of Aigüestortes i Estany de Sant Maurici National Park. How do you get there? The starting point is the Sallente dam and reservoir, reached via the local L-503 road through the villages of Espui, Central de Cabdella and Cabdella. A cable car (telefèric de Sallente) runs from the parking area at the dam and cuts out the steepest initial climb. From the upper cable car station, the trail drops around 150 metres to reach the old carrilet track, a former narrow-gauge railway bed once used to haul materials during the construction of the area's dams. From there the path turns left and follows a largely flat stretch for roughly 5 kilometres along the valley's slope. This is the section where Estany de Castieso comes into view, a lake visible right from the trail, framed by the rocky, high-mountain terrain typical of this part of the Pyrenees. Only past the lake does the route change character, launching into a steep, demanding climb that continues on toward Estany Gento. What will you see? Estany de Castieso is a small, calm glacial lake with the cool, distinctive colour typical of bodies of water fed by melting snow and ice. It's surrounded by bare rocky ridges and steep slopes covered in sparse high-altitude vegetation, a treeless landscape characteristic of the high Catalan Pyrenees. The quiet and comparatively light foot traffic on this stretch, compared to busier points further along the route, make the lake a favoured spot for a short rest during a longer hike. Views from the trail take in not just the lake itself but also the wider Vall Fosca valley and the surrounding peaks, including the ridge leading toward Pic de Sobremonestero. For hikers continuing further, the section by Estany de Castieso works as a natural landmark, marking the end of the easy, flat part of the route and the start of the tougher climb ahead. When should you visit? Given the altitude and alpine character of the terrain, the hiking season generally runs from June to October; outside that window trails can be snow-covered and the cable car may operate on a reduced schedule. The best conditions fall between July and September, once snow has cleared from the higher ground and days are long with more stable weather. An early morning start is a good idea to avoid the afternoon thunderstorms that are common in the Pyrenees during summer. Frequently asked questions Can you reach Estany de Castieso without taking the cable car? Yes, it's possible on foot from the Sallente reservoir, though this adds a steep initial climb to an already demanding route. Is the lake suitable for swimming? The water comes from cold, high-mountain sources, so swimming is uncomfortable and not recommended for most visitors. Is the route suitable for children? The stretch along the old railway bed, passing the lake, is relatively gentle, but the section beyond the lake requires good fitness and mountain hiking experience. Is there a mountain refuge nearby? Yes — continuing past Estany de Castieso toward Estany Gento leads to the Colomina refuge, a popular overnight stop for hikers exploring this part of the Pyrenees.
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Lake of Banyoles
Banyoles
Banyoles is a town in Catalonia, in the province of Girona, best known for the lake — Estany de Banyoles — that sits right beside its historic centre. Banyoles is the capital of the Pla de l'Estany comarca and has just under 20,000 residents, yet despite its small size (the town covers only 11.1 km²) it draws travelers looking for a quieter alternative to the busy Costa Brava coast. What can you see in Banyoles? The lake is the town's centerpiece — one of the largest natural freshwater lakes in Catalonia, ringed by a walking and cycling path that takes under an hour to complete. Its water comes from underground springs, which keeps it unusually clear and holds its temperature steady throughout the year, making it a favorite spot for rowers and swimmers alike. The old town has kept its medieval street layout, with stone houses and inner courtyards. It's worth walking to the Sant Esteve monastery and to Plaça Major, where a traditional market takes place on Saturdays. Banyoles therefore offers two different experiences in one visit — an intimate historic center and the open expanse of the lake, framed by the hills of Pla de l'Estany. How do you get to Banyoles? Banyoles sits in Girona province, roughly 20 minutes by car from the city of Girona and under an hour from Barcelona. Driving is the most convenient option, since the town connects easily to the AP-7 motorway linking Barcelona with the French border. Travelers without a car can take a train or bus to Girona and then a local bus straight to the center of Banyoles. When is the best time to visit? Spring and early autumn are ideal, with mild temperatures for walking around the lake and fewer visitors than in summer. Summer draws families and water-sports enthusiasts thanks to the warm water, though the lakeside can get busier during those months. In winter, Banyoles keeps its calm, local character — a good time to explore the old town without crowds. What can you do at the lake? Besides walking or cycling the loop around the lake, kayaking trips and rowboat rentals are popular. Along the shore there are viewpoints and café terraces where visitors can watch local rowing clubs train — Banyoles has a long tradition in water sports and regularly hosts regional competitions. Frequently asked questions Can you swim in the lake at Banyoles? Yes, the lake has designated swimming areas, and thanks to its spring-fed water it stays clean year-round. How much time do you need to see the town? A single day is enough to walk around the lake, explore the old town, and visit the Sant Esteve monastery, though travelers who prefer a slower pace can plan for two days. Is Banyoles a good destination for families with children? Yes — the flat path around the lake, the swimming areas, and the town's relaxed pace make it an easy choice for a family trip. Does Banyoles have restaurants serving local cuisine? The town center and the lakeside promenade have plenty of restaurants serving Catalan dishes, including freshwater fish specialties the region is known for.
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Lago del Valle
Somiedo
Lago del Valle is the largest lake in Asturias, located within Somiedo Natural Park, in the municipality of Somiedo. Where is it and how do you get there? Sitting at 1,550 meters above sea level, Lago del Valle is part of the Saliencia Lakes (Lagos de Saliencia), a cluster of post-glacial lakes carved out during the last ice age. The group also includes Calabazosa, Cerveriz, Almagrera Lagoon, and Lago de la Cueva. Reaching the lake means hiking through Somiedo Natural Park on mountain trails, so a reasonable level of fitness is needed for the ascent. Plan for a full-day outing and factor in enough time to descend before dark. What will you see at the lake? Beyond being the largest lake in the region, Lago del Valle sits in one of the most ecologically valuable corners of Asturias. The surrounding valley is home to the Eurasian brown bear, and otters can be spotted in and around the water. Golden eagles and Egyptian vultures — both emblematic of the Asturian mountains — are frequently seen circling overhead. The lake basin also hosts the richest concentration of amphibian species found anywhere in the park, including the Alpine newt, palmate newt, fire salamander, common toad, common midwife toad, common frog, and Iberian frog. The entire lake area is protected as part of the Somiedo Natural Park Biosphere Reserve, recognized within the UNESCO World Network of Biosphere Reserves, and Lago del Valle itself was declared a natural monument on 22 May 2003. Local legend adds another layer of interest: according to Asturian folklore, the lakes are watched over by xanas, mythical female spirits tied to water and mountain landscapes in the region's oral tradition. When is the best time to visit? Given its altitude and mountainous surroundings, the best window for a visit runs from late spring through summer into early autumn, when trails are clear and weather conditions are more predictable. In winter, snow can make access difficult or impossible. Early morning and late afternoon offer the best chances of spotting wildlife, particularly birds of prey circling above the lake. Frequently asked questions Is Lago del Valle the largest lake in Asturias? Yes, it holds that title for the whole principality and is also the largest of the Saliencia Lakes group. What wildlife can you see around the lake? The area is home to the Eurasian brown bear, otter, golden eagle, and Egyptian vulture, and the lake hosts the greatest variety of amphibian species found in the park. Is the lake a protected natural area? Yes, Lago del Valle lies within Somiedo Natural Park, part of the UNESCO Biosphere Reserve network, and has held natural monument status since 2003. Are there other lakes worth visiting nearby? Yes, Lago del Valle is part of the Saliencia Lakes group, which also includes Calabazosa, Cerveriz, Almagrera Lagoon, and Lago de la Cueva, all within the same mountain range.
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Laguna de la Ballestera
Osuna
Laguna de la Ballestera is a small, saline endorheic lake located in the municipality of Osuna, in the province of Seville, right in the heart of Andalusia. It forms part of the Complejo Endorreico de la Lantejuela Natural Reserve, pairing with the neighboring Laguna Calderón Chica. Despite its modest size and shallow depth, the lagoon carries real ecological weight — its salty waters support rare aquatic plant life and draw large numbers of birds, making it a worthwhile stop for nature lovers exploring the countryside around Osuna. What will you see there? Sitting at roughly 147 meters above sea level, the lagoon is surrounded by the gently rolling farmland typical of inland Seville province. Its high water salinity creates a habitat that is genuinely unusual for the region — two aquatic plant species of the genus Althenia grow here, both with a very limited distribution across Andalusia. The shoreline is lined with riparian vegetation, including tamarisk shrubs and scattered poplar trees planted as part of conservation efforts along the trail. The real draw of the lagoons in this complex, however, is birdlife. Ballestera functions as a feeding ground, breeding site, and resting stop for waterbirds, particularly during spring and autumn migration. Visitors can often spot flamingos and other species associated with inland saline wetlands — bringing binoculars is well worth it. How do you get there? Access to the lagoons starts along the road connecting El Rubio and Lantejuela, near the village of Santa Gema. From there, a marked trail — the Sendero Las Lagunas de Osuna — follows the old Cañada Real de El Rubio, a traditional livestock droving route. The path winds through young olive groves, making for a pleasant walk through classic Andalusian countryside before reaching the shores of the Ballestera lagoon. Given the terrain, sturdy walking shoes are recommended — the ground can be uneven, and the area around the lagoons can turn muddy during the rainy season. When is the best time to visit? Autumn, winter, and early spring are the best seasons to visit, when water levels are higher and waterbirds — including migratory species — make the most use of the site as a stopover. In summer, endorheic lagoons like this one often shrink significantly or dry out altogether, which limits birdwatching, though the site still retains its raw, steppe-like character. Early mornings and late afternoons offer the best birdwatching conditions, with softer light and more active wildlife. Frequently asked questions Is Laguna de la Ballestera suitable for a family walk? Yes, the Sendero Las Lagunas de Osuna trail is relatively gentle and runs through quiet farmland, making it a good choice for an easy walk with children. Can you see flamingos at Laguna de la Ballestera? Yes, the saline waters of the Lantejuela lagoon complex attract flamingos and other waterbirds, especially during the cooler months. Does the lagoon dry up in summer? Yes, as an endorheic lake, Ballestera is prone to seasonal water level swings and can shrink considerably or temporarily dry out in summer. Are there other natural attractions nearby? Yes, the neighboring Laguna Calderón Chica and the wider Complejo Endorreico de la Lantejuela Natural Reserve offer additional viewpoints within the same wetland complex.
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