On the top of Aiguille Piercee chairlift hike up to the ridge and ski down on a high traverse at the top of the Sache as far as you can. The put on the skins and go to the bottom of the colouir and boot it up.
An impressive and steep colouir with a dogleg in the middle. Steep skiing and this one is rarely skiied. Mostly because it takes some effort to get there.