In 1975, Patrick Vallençant skied in some very challenging couloirs in the Oisans region: the north couloir of the Col du Diable, the north couloir of the Coup de Sabre, the couloir of the Pic sans Nom, the Barre Noire couloir in the Écrins massif, and the Gravelotte couloir on the Meije. He was accompanied by Jean-Marc Boivin, P. Guillet, P. Perrier, Gérard Pétrignet, Jacques Ramouillet, Pierre Saloff-Coste, and Joseph Spagnolo. In the second part of the trip, Vallençant completed a circuit of the Meije in three mixed-mountain ascents and, above the avalanche debris, skied off-piste through the steep couloirs and glaciers of the Oisans. He then climbed the routes to the summit of the Meije alone, following the stages of a high-mountain itinerary from the Refuge de l'Aigle.

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