Black diamond Mountain High, CA
O2 drops 135 vertical feet over 448 feet of skiing, with a steepest pitch of 22° about 230 feet below the top. That's steeper than 12% of the 4,740 black diamond runs we've measured in North America, and the 21st steepest of 37 named runs at Mountain High. It faces northeast.
Facing northeast at an average 18°, O2 gets about 68% of the winter sun that flat ground at Mountain High does, December through March. That's shadier than 74% of the runs we've measured, and the 9th shadiest named run at Mountain High. Its top sits at 7,710 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.