A mountainous area in the western Cantabrian Range, with extensive areas of scrub, patches of Quercus woodland, plantations of Pinus sylvestris, and alpine grasslands grazed by sheep and cows. The site includes 13 lakes.
This is a very important area for forest and alpine grassland species, particularly Perdix perdix and raptors. Species of global conservation concern that do not meet IBA criteria: Falco naumanni (non-breeding).
Pressure/threats to key biodiversity
The most important threat is the enlargement of open-cast slate quarries. Other threats include fires, hydro-power schemes and unplanned tourism. The lakes are protected at a regional level.
National Partial International None22,365 ha of IBA covered by Natural Park (Lago de Sanabria y alrededores, 22,365 ha). 1,066 ha of IBA covered by Natural Monument (Lago de Truchillas, 1,066 ha). 731 ha of IBA covered by Natural Monument (Lago de La Baña, 731 ha).