This allows us to respect differences in height differences between 2 consecutive nights of about 500 m to spend 2 nights above 4800 m and to have reached 2 times the altitude of 5400 m at Thorong Pass. We thus arrive at the well-acclimated CB for the future.

Then the climb to the camp at 5500 m does not pose a problem of acclimatization.

From the CB the start is clearly visible, we go up a screen and then from a pass at 5200 m easy rocks lead to two small projections equipped with ropes fixed on 150 m. We arrive on a plateau where we set up the camp. Beautiful view of the Mustang and the entire chain of Annapurnas.

For the ascent start very early between 1 and 3 am because the day is long over 1000 m of altitude to reach the summit of Chulu West at 6420 m. We start on a moraine that leads us to 2 snow slopes of about 40 ° on 100 and 50 m respectively before continuing by a ridge of snow and reaches a large plateau.

The end of the climb takes place on a ridge to the summit where there is little room.