The "Estany Llebreta" is a glacial lake of 8 hectares and maximum depth of 12 m, located in the National Park of Aigüestortes and Sant Maurici at 1999 m altitude, in the municipality Vall de Boí, in the Alta Ribagorça. Very close to the lake, to the west, is the church of Sant Nicolau de Boí that gives name to the valley.