Valle de Tena
The Tena Valley is one of the largest and most populated valleys in the Pyrenees. It has an area of about 400 km² and its altitude ranges from 600 meters at its lowest part to over 3 000 m in many of its peaks (Balaitus, Gran Facha, Argualas or Picos del Infierno).
It also has two large reserves: Lanuza and Búbal.
Not only that, but it is part of the Ordesa-Viñamala Biosphere Reserve of the Bearded Vulture protection area and has two Natural Monuments of the Pyrenean Glaciers: The Massif of Balaitus or Moros and the Massif of Infierno or Quijadar de Pondiellos.
It shares territory with the Viñamala SPA and slightly with the Collarada Ibón de Ip SPA. Its habitats include Pyrenean, alpine, subalpine and Pyrenean meadows. Alpine rivers with woody vegetation. Siliceous rocky slopes. Hillside forests, beech woods and mountain peat bogs.
It is an exceptional territory for bird watching, both for those that live in the valley and migratory birds.