The Val di Fassa Reserves Network extends over the territory of Fassa for 6,900 hectares, equal to about 22% of the territory of the Comun General de Fascia. The areas that make up the network are on the right and left of the Avisio stream and are therefore distributed over the 7 municipalities of the valley. The Reserves Network stands out not only for the unique naturalistic and landscape aspects, but also for the variability of the habitats present (alpine meadows, wetlands, peat bogs, rocky habitats, snowfields and perennial glaciers), playing a fundamental role for the presence and reproduction of endangered plant and animal species. Val di Fassa Reserves Network is the only network that includes within it two Dolomite groups recognized by UNESCO as a World Heritage Site. It is the Trentino part of the Marmolada and the Trentino part of the Latemar-Catinaccio-Sciliar, the latter shared with the nearby Val di Fiemme.