Included in the PEIN (Pla d’Espais d’Interès Natural de Catalunya- Natural Interest Landscape Plan of Catalonia). It is the only lake in the county of El Pallars Sobirà (Pirineus)with a karst, non glacial, origin. Its waters come form an internal sprout and it is between 20 and 40 metres deep.
Flora and Fauna
This lake area is one of the most important reserves for water birds around the Pyrenees, and lodges a great variety of migratory birds, such as the mallard, the osprey or the snipe. It has, in addition, a wide range of flora and fauna, some of them scarcely found in other areas of the Pyrenean territories.
Fishing and swimming are allowed in the lake.