Black diamond Terry Peak, SD
Avalanche drops 334 vertical feet over 874 feet of skiing, with a steepest pitch of 41° about 500 feet below the top. That's steeper than 96% of the 4,740 black diamond runs we've measured in North America, and the 1st steepest of 26 named runs at Terry Peak. It faces northeast.
Facing northeast at an average 23°, Avalanche gets about 60% of the winter sun that flat ground at Terry Peak does, December through March. That's shadier than 84% of the runs we've measured, and the 5th shadiest named run at Terry Peak. Its top sits at 6,320 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.