Easy circular walk taking in the pretty spectacular view from Col Vert.
Parking at les Cochettes, just outside villard de Lans. There is water available here as at the refuge Roybon Bergerie. On the ascent its not actually clear how to reach the col but rest assured there is a path, and it doesnt involve any climbing. The views from the col are incredible.
For the return it is worth taking the 10 minute detour to see Cascade de la Fauge.