It is an incredibly beautiful place with a landscape of towering summits. It has a wide variety of ecosystems with both an Atlantic and Mediterranean influence, which is what gives it such a rich and diverse flora and fauna. The scenery is dominated by the great massif of Monte Perdido (3,355 m), with the peaks of the Tres Sorores branching out into the valleys of Ordesa, Pineta, Añisclo and Escuaín.