Green Keystone, CO
Lower Prospector drops 878 vertical feet over 5,256 feet of skiing, with a steepest pitch of 17° about 10 feet below the top. That's steeper than 70% of the 3,109 green runs we've measured in North America, and the 124th steepest of 140 named runs at Keystone. It faces northwest.
Facing northwest at an average 10°, Lower Prospector gets about 92% of the winter sun that flat ground at Keystone does, December through March. That's sunnier than 63% of the runs we've measured, and the 53rd sunniest named run at Keystone. Its top sits at 10,930 feet.
With little slope to hide behind, it takes nearly the full winter sun of open ground: powder settles and turns heavy sooner after a storm, and spring snow softens early. 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.