Mont Outheran is a mountain high located in the Chartreuse massif of the French Prealps, Savoie, France.
Geography Mont Outheran is a narrow plateau, lying several kilometers in the north-south direction between the Col du Grapillon at the south and the Col du Planet at the north. It is surrounded by cliffs on all sides. It lies within the communes of Saint-Thibaud-de-Couz and Entrement-le-Vieux, with the western cliffs forming the boundary. Much of Mont Outheran is wholly owned by Saint-Thibaud-de-Couz.
Mont Outheran is formed from Urgonian limestone, overlaying Hauterivian marls.
Hiking Mont Outheran is traversed by a hiking route between Col du Grappillon and Col du Mollard. The final part of the ascent from Col du Grappillon is exposed, and requires some scrambling in the Pas du Cuert which leads on to the plateau.
Caves Although about 50 natural limestone shafts have been identified on the plateau, no significant cave systems have been discovered. There are two caves which are over deep. Gouffre Mollard is deep, and long, and Gouffre du Mont Outheran is deep, and long.
References