Like the name says, this resort is made up of two Alps, two alpine pastures put together over 50 years ago to form a ski resort. It shows how prescient the burghers of Mont-de-Lans and Venosc were; today 35,000 Frenchmen at a time flock to the mile-high resort. They come to enjoy the extensive, mostly treeless ski terrain, efficient lifts and lots of sun on south-facing slopes. They ski on 220 km of groomed slopes, 20 percent of them black, and 44 percent intermediate and 36 percent easy.. A top skiable elevation of 3600 meters and a vertical drop of 2300 meters are impressive statistics rarely found in a ski area. Snowboarders have a real chance to strut their stuff. In addition to wide-open spaces, shredders have a boarder cross, fun park, and halfpipe. Stout-hearted skiers have a mile-long couloir to jump into. The Mont-de-Lans glacier, near the top of the main mountain, is claimed by the tourist office to be the largest skiable glacier in Europe. .