Vall Fosca, is a valley situated to the north of Catalonia in the Pyrenees, and it has one of the most spectacular entrances to the National Park Aigüestortes i Estany de Sant Maurici, the only one by cable car. The top of the valley, at 2200 m high, has more than 30 lakes and several walks linking with old mule tracks that connect the villages of the valley and offer impressive landscapes (waterfalls, lakes, cliffs, etc.).

Vall Fosca has 19 small villages, starting at 800 m to 1420 m high in Capdella. It gathers around 800 inhabitants and the main economical activity is cattle raising (cows, ship and horses). In the cattle fair held in la Pobleta de Bellveí in October all this activity is seen.

The hydroelectric power station is an outstanding element of the valley, as it was the first one in Catalonia that used the force of falling water to produce electricity and to transport it all over Catalonia in the beginning of 20^th century, in 1914. Today it is still working and it can be visited together with the Hydroelectric Museum.

There are also two jewels of the Romanesque art, Sant Vicenç in Capdella and Sant Martí in Torre de Capdella, both declared as Cultural Assets of National Interest by the Catalan Government.