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A classic, popular tour with a long descent for a short ascent
From the col des Grands Montets, start off down the "Point de vue" piste and leave it rapidly to ski down the Rognons glacier NE in the direction of the Argentière glacier, classic off piste with lots of variations. For example cross the ropes marking the boundary of the piste at a signpost go towards the Rognon at 3000m keeping to the right and then to the S of the Rognons moraine.
Either, cross the flat part of the glacier at about 2550m to its tru right bank and make a long ascending traverse NW, often tricky, under the lower buttresses of the Aiguille du Chardonnet to reach a flatish area around 2730m. (Red trace on the photo.)
Or, bypass on the true left bank a zone of crevasses and seracs and traverse a flat part of the glacier at about 2400m. Go up the short but steep moraine and then go up the sustained slopes to the N to reach a snow bowl leading to the flattish area at 2730m, where you join the first option (blue trace on the photo.)
Continue to the N to traverse into the gullies coming down from the Col du Passon. Climb the one on the right, rocks or ice possible near the top.)
From the col du Passon, make a descending traverse to the NW. At point 2722m you can go to the left, (steeper) or to the right of a rocky outcrop.
Two options to reach Le Tour:
Either Go to the left to pass under the base of the Bec de la Cluy (2334m). Continue by descending the NW cwm of the Bec de Lachat and enter a larch forest. (blue trace.) Descend towards the village, going to the left some rock bands before traversing back right to cross a foot bridge at 1470m.
Or Continue to descend to the right of the Planard stream and at about 2000m, traverse right to the NE a step zone of shrubs, (vernes) to reach the cwms below the Tour glacier, (risk of collapsing seracs.) Go down the cwms and join the Le Tour pistes by traversing a zone of shrubs, around 1600m.
No guides yet.
Negative slope values means the track is heading uphill.