Ascension de l'éperon Walker, voie Cassin, dans la face Nord des Grande Jorasses,
par Marion Poitevin (Guide), Lise Billon (Guide) et Denis Corpet (vieux client pêchu / a fit old client)
Climbing the Walker spur, Cassin route, in Grandes-Jorasses North Face.
2018: July 17th, Night in Leschaux refuge; July 18, 2018, wednesday, climbing the Walker spur
and beginning the way down: Bivi at approx. 4050m ; July 19, descent to Boccalate and Planpincieux, Italy Alpinisme & Haute-Montagne Denis