Double black Alpine Meadows, CA
Keyhole Open Slopes drops 279 vertical feet over 508 feet of skiing, with a steepest pitch of 42° about 280 feet below the top. That's steeper than 81% of the 2,251 double black runs we've measured in North America, and the 26th steepest of 132 named runs at Alpine Meadows. It faces northeast.
Facing northeast at an average 34°, Keyhole Open Slopes gets about 31% of the winter sun that flat ground at Alpine Meadows does, December through March. That's shadier than 99% of the runs we've measured, and the 9th shadiest named run at Alpine Meadows. 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.