Aside from the Tunnel and Sarenne black runs, the latter the world's longest at , many Off-piste opportunities exist both from the summit of the Pic Blanc and the Dome des Petites Rousses. These include the 50-degree Cheminees du Mascle couloirs, the open powder field of Le Grand Sablat, the Couloir Fleur and the Perrins bowl. Up to of vertical descent are available with heli drops back to the resort's altiport. The proximity to the exclusively off-piste resort of La Grave as well as tree skiing at Serre Chevalier and the glacier and terrain parks of Les Deux Alpes have made Alpe d'Huez a popular base for skiers looking to explore the Oisans region.