After a downhill stretch, take the dirt road that continues on level ground up to the Devies mountain pasture (1726 m). Take the path that climbs up to the Merdeux Desot (1950 m) and then Tsa de Merdeux (2273 m). Hour barrier
After crossing some streams, you reach the plateau of Lac Merdeux (2540 m) and the Frassati shelter (2551 m). Refreshment and control point.