La Rosière is a ski resort located in the French Alps, specifically in the commune of Montvalezan, Savoie department. It offers 152 km of slopes and 5.2 km of ski routes, with 34 lifts transporting guests. The resort has a south-facing aspect, providing fine views of the valley and nearby Les Arcs. La Rosière is part of the Espace San Bernardo ski area, which also includes the Italian ski resort of La Thuile, allowing skiers to ski in both France and Italy on the same lift pass.