Black diamond Waterville Valley, NH
Pfosi's Folly drops 444 vertical feet over 1,690 feet of skiing, with a steepest pitch of 25° about 880 feet below the top. That's steeper than 25% of the 4,740 black diamond runs we've measured in North America, and the 15th steepest of 65 named runs at Waterville Valley. It faces north.
Facing north at an average 16°, Pfosi's Folly gets about 58% of the winter sun that flat ground at Waterville Valley does, December through March. That's shadier than 87% of the runs we've measured, and the 7th shadiest named run at Waterville Valley. Its top sits at 2,680 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.