Backcountry ski run (advanced)La RosièreAdvanced
Marcassin
Marcassin descends to Petit Bois at Le Vaz on La Rosière’s lower slopes. Ultimate-Ski describes it as a steep, south-facing black run, contrasting with the higher, more easterly Chevreuil. This is resort terrain, rather than an independently accessed backcountry descent.
References
Ultimate-Ski original editorial guide
La Thuile Ski Area — Advanced and Expert Skiing