Black diamond Aspen Mountain, CO
Back of Bell #1 drops 408 vertical feet over 1,091 feet of skiing, with a steepest pitch of 37° about 200 feet below the top. That's steeper than 90% of the 4,740 black diamond runs we've measured in North America, and the 37th steepest of 139 named runs at Aspen Mountain. It faces northeast.
Facing northeast at an average 22°, Back of Bell #1 gets about 76% of the winter sun that flat ground at Aspen Mountain does, December through March. That's shadier than 62% of the runs we've measured, and the 73rd shadiest named run at Aspen Mountain. Its top sits at 10,510 feet.
Shaded snow stays colder and drier, so it holds powder longer after a storm and is slower to crust over or turn to slush in spring. Shading from ridges and trees isn't counted yet.
under 25°25–35°35–45°45°+ Hover to follow the line on the map.
Measured by ZRankings from 1-meter USGS lidar. Steepest pitch is the steepest stretch of about 50 vertical feet along the skiable line. Run lines come from OpenStreetMap and can sit a little off the skied path.