Black diamond Mammoth, CA
Dragon Alley drops 652 vertical feet over 2,826 feet of skiing, with a steepest pitch of 25° about 470 feet below the top. That's steeper than 24% of the 4,740 black diamond runs we've measured in North America, and the 73rd steepest of 151 named runs at Mammoth. It faces east.
Facing east at an average 13°, Dragon Alley gets about 92% of the winter sun that flat ground at Mammoth does, December through March. That's sunnier than 63% of the runs we've measured, and the 35th sunniest named run at Mammoth. Its top sits at 9,620 feet.
With little slope to hide behind, it takes nearly the full winter sun of open ground: powder settles and turns heavy sooner after a storm, and spring snow softens early. 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.