Start from the Couvercle Hut, walk up N the upper part of the Glacier de Talèfre to the base of the couloir.
Cross the Rimaye at its right and continue up the couloir for about 2003 meters, traverse to the left to cross a small rock barrier and continue climbing the couloir up to the col.
Follow the ridge to the top. Descent is easy: just the same way around: abseil points are provided (about 12/13) at the left bank.
It is essential to complete descent before the sun gets on the couloir: rock fall, avalances.
double ropes (min. 50 meters), 2 ice axes, crampons, some large slings to strengthen the abseil points.
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