Black diamond Snowbird, UT
Thunder Alley drops 579 vertical feet over 2,600 feet of skiing, with a steepest pitch of 32° about 1,270 feet below the top. That's steeper than 68% of the 4,740 black diamond runs we've measured in North America, and the 85th steepest of 151 named runs at Snowbird. It faces north.
Facing north at an average 13°, Thunder Alley gets about 61% of the winter sun that flat ground at Snowbird does, December through March. That's shadier than 83% of the runs we've measured, and the 46th shadiest named run at Snowbird. Its top sits at 8,390 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.