Lake Roumassot is the lowest of the Ayous lakes. This natural lake of glacial origin is located at an altitude of 1,845 meters and serves as a summer pasture for …
Bious-Artigues is an artificial reservoir located at an altitude of 1,416 meters. Its compound name is the association of the name of the Bious valley with the term Artigues which designates clearings cleared in the Middle Ages.