This site includes the southern slopes of the Guadarrama mountain range. The main vegetation-types are Quercus and Pinus woodland, degraded scrub and above 1,800 m alpine grassland.
An important area for forest raptors. Species of global conservation concern that do not meet IBA criteria: Aquila adalberti (resident).
Pressure/threats to key biodiversity
The main threat is from urban development. Other threats are from the high tourist pressure and the use of the site for recreation. A management plan exists for part of the site.
National Partial International Partial8,000 ha of IBA covered by Natural Park (Cuenca Alta del Rio Manzanares, 46,323 ha). 14,745 ha of IBA covered by Natural Park (Cumbre, Circo y Lagunas de Peñalara, 768 ha). 8,000 ha of IBA covered by Biosphere Reserve (Cuenca Alta del Rio Manzanares, 101,300 ha). 5,500 ha of IBA covered by Special Protection Area (Alto Lozoya, 5,500 ha).