Black diamond Terry Peak, SD
Old Falls drops 163 vertical feet over 620 feet of skiing, with a steepest pitch of 26° about 380 feet below the top. That's steeper than 31% of the 4,740 black diamond runs we've measured in North America, and the 5th steepest of 26 named runs at Terry Peak. It faces northeast.
Facing northeast at an average 16°, Old Falls gets about 61% of the winter sun that flat ground at Terry Peak does, December through March. That's shadier than 83% of the runs we've measured, and the 7th 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.