Double black Snowmass, CO
Rock Island drops 452 vertical feet over 1,394 feet of skiing, with a steepest pitch of 46° about 1,100 feet below the top. That's steeper than 92% of the 2,251 double black runs we've measured in North America, and the 7th steepest of 126 named runs at Snowmass. It faces east.
Facing east at an average 20°, Rock Island gets about 83% of the winter sun that flat ground at Snowmass does, December through March. That's sunnier than 51% of the runs we've measured, and the 17th sunniest named run at Snowmass. Its top sits at 11,130 feet.
It gets an ordinary dose of sun: powder lasts a typical amount of time, and spring snow softens on a normal schedule. 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 USGS lidar (1-meter where it exists, coarser elsewhere). 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.