Seen from the valley, it is Ze M! (or W) depending on perspective. The NW face offers some fine trad rock routes.
From Montenvers, 2 hours to the start of climb. The turn off the main path between Montenvers and Plan de l'Aiguille is not posted but there is a nice path that weaves it's way up and out of sight...follow it up steep slopes of boulders and scree to the start. Wonderful bivy nook with stone walls etc. along path about midway to base.