Lac de Grattaleu

Lac de Grattaleu is one of the 130 high-altitude lakes of the Vanoise massif. Trapped in the ice for nearly six months per year, only certain invertebrate species survive in these conditions. The lake surroundings are a spectacle of cotton grass. These plants with white bristles form a cottony carpet and although located at 2,500 m in altitude, the mallard ducks enjoy stopping here.