It is an activity between hiking and mountaineering. You will be initiated in a gentle and progressive way to glacier-walking technics, to equipment and to high altitude.
Many options are available such as a day climb up to Gebroulaz Dome (3500 m.), three passes (Thorens, Lory, Bouchet), or including a night at a refuge, such as la Réchasse (3200 m.), Dôme.