Double black Alpine Meadows, CA
Keyhole 1 drops 324 vertical feet over 487 feet of skiing, with a steepest pitch of 49° about 50 feet below the top. That's steeper than 97% of the 2,251 double black runs we've measured in North America, and the 7th steepest of 132 named runs at Alpine Meadows. It faces north.
Facing north at an average 43°, Keyhole 1 gets about 27% of the winter sun that flat ground at Alpine Meadows does, December through March. That's shadier than 100% of the runs we've measured, and the 3rd shadiest named run at Alpine Meadows. Its top sits at 8,470 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.