From the same Vall de Boí d’Aigüestortes and Estany de Sant Maurici there is an access to the western sector of the Parc Nacional. The Parc, with an acreage of 14.119 hectares, takes in the dams of Llebreta, Llong, Negre, Travessani and Monges, tops like Comoloformo (3.032 ms), forests of deciduous in its valley and vegetables communities gradually adaptiong to the cold, depending on the height, in addition to almost 200 species of vertebrates and amphibians like Pyrenean Triton and the native trout.