Aragüés Valley Nature · Aragüés del Puerto, La Jacetania, Huesca Image of Aragüés del Puerto, not of the place itself. The valley of Aragüés is a Pyrenean valley crossed by the Osia river, in the Aragonese comarca of the Jacetania; to the east it connects with the valley of Hecho, to the north with France via the ibón (glacial lake) of Estanés, and to the west, through a pass, with Aísa. It is divided into the villages of Aragüés del Puerto and Jasa, and at the end of the valley rises the peak of Bisaurín, 2,670 metres high. Aragüés del Puerto, at 970 m in the western Pyrenees, occupies a small depression of the valley of Hecho with steep streets and houses dating from the 16th century. Declared a Special Protection Area for Birds (SPA), it is one of the least exploited and best preserved valleys of the Aragonese Pyrenees, with mixed beech woods of black pine and fir sheltering griffon vulture, bearded vulture, kite and golden eagle. Photo: Juli Soler i Santaló (Public domain) What to see and do in Aragüés del Puerto