The Colorado Rocky Mountains have many ski areas. The biggest is Vail, but the most know is Aspen.Vail did not exist until 1960s; today it is complete resort with the largest skiable area in the United States. It combines several mountains and many acres of backcountry skiing. Unfortunately it often becomes overcrowded because of its growing popularity.
Aspen is old mining village that become a ski town right after WWII. Ask anyone to name a ski resort in the United States and most likely Aspen will one of them. This town is known as the upscale place visited by rich and famous, but skiing in this area is also one of the best. The Aspen Mountain has a steep face right of the town, vertical drop is almost 1000m/ 3300 ft. The most important is that this mountain has the terrain without any beginners trails and absolutely no lines. This is skiing without limits; simply ski here as much as you can!