The Dihedrals are a cluster of vertical walls and aretes that climbers absolutely love. The Left Dihedrals consists of more acceptable routes for beginners on this wall. It has lower-angled faces, knobs, and well spaced bolts. Temperatures can get pretty toasty during the summer months, and it can also get below freezing during the winter months. Be sure to bring some cash for a $3 dollar parking permit, or you can purchase an annual pass for $25. There's also a roadside campground just before you get to the main parking area.