Lac de la Sassière is a high mountain lake at an elevation of 2.462m (8,077ft) above the sea level located in the Tarentaise Valley, Savoie department in the Rhône-Alpes region, in south-eastern France.
The road to the lake is pretty steep and narrow. Only the first 3.9 kilometres are paved. The asphalted part ends near a small dam, where there’s a parking lot for cars. The last 3.6km are closed to cars but on a good quality unpaved road.
Starting from Le Franchet, at an elevation of 1.930m above the sea level, the road to the lake is 7,6km long. Over this distance, the elevation gain is 532 meters, and the average percentage is 7%.