Double black Sundance, UT
Wonderboy drops 587 vertical feet over 978 feet of skiing, with a steepest pitch of 45° about 690 feet below the top. That's steeper than 91% of the 2,251 double black runs we've measured in North America, and the 1st steepest of 66 named runs at Sundance. It faces north.
Facing north at an average 37°, Wonderboy gets about 36% of the winter sun that flat ground at Sundance does, December through March. That's shadier than 99% of the runs we've measured, and the shadiest named run at Sundance. Its top sits at 7,470 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.