Gerber Lake

Gerber Lake (Catalan: Estany de Gerber) is one of the largest and deepest glacial lakes in the municipality of Alt Àneu, deep in the Catalan Pyrenees.

Where is Gerber Lake located?

The lake sits at roughly 2,170 metres above sea level, in the upper reaches of the Àneu Valley (Valls d'Àneu), close to the border with the Val d'Aran. It lies within the peripheral zone of the Aigüestortes i Estany de Sant Maurici National Park and borders the Alt Pirineu Natural Park. Covering 14.4 hectares and reaching a depth of 63 metres, it stands out as one of the few large lakes in the region left untouched by the hydroelectric engineering that has reshaped many other Pyrenean lakes.

How do you get there?

Most visitors start from the large car park next to the lower station of the La Peulla chairlift, reached by the road climbing towards the Port de la Bonaigua pass. From there, the trail winds through a forest of black pine and thickets of rhododendron before opening out onto the high-altitude meadows surrounding the lake. The path is rocky in places but well trodden and clearly marked, making it accessible to hikers of average fitness.

What will you see along the way?

The popular route to the lake runs between roughly 7.2 and 8.5 km round trip, with an elevation gain of 290–350 metres, taking anywhere from just over an hour for the shorter waterfall detour to about 4 hours for the full round trip. Along the way, hikers pass the striking Cascada de Gerber, a waterfall cascading over the rocks. The scenery shifts noticeably over the course of the walk, from the shaded forest lower in the valley to open, rocky high-mountain terrain with views of the Bassiero massif. The lake itself is known for its vividly turquoise water, standing out against the surrounding meadows and granite ridges.

When is the best time to visit?

The ideal window for hiking runs from June to October, when the trail is free of snow and the meadows around the lake are at their greenest. During peak summer (July–August), the abundance of water in the streams and waterfall makes the walk especially rewarding. In winter, the route is sometimes covered on snowshoes, though this calls for more mountain experience, proper gear, and checking avalanche conditions beforehand.

Frequently asked questions

How long is the hike to Gerber Lake? Depending on the exact route chosen, the round trip runs between about 7.2 km and 8.5 km, with 290–350 metres of elevation gain.

Is the trail difficult? The route is considered easy to moderate and suitable for most hikers with average fitness, though the altitude above 2,000 metres calls for prior acclimatisation, especially on hot summer days.

Are there other lakes worth seeing nearby? Yes — the Gerber Valley (Vall de Gerber) holds several smaller tarns, including Estanyet de Gerber de Baix, which can be visited alongside the main hike without significantly extending the route.

Where's the best place to start the hike? The most convenient starting point is the car park by the La Peulla chairlift, reached via the road towards the Port de la Bonaigua pass from the Àneu valley side.