Snow cornice Snow cornice A snow cornice or simply cornice (from the Italian cornice meaning "ledge") is an overhanging edge of snow on a ridge or the crest of a mountain and along the sides of gullies. They form by wind blowing snow over sharp terrain breaks (e.g. the crest of the mountain) where it attaches and builds out horizontally. This build-up is most common on the steeper and leeward sides of mountains. Cornices are extremely dangerous and travelling above or below them should be avoided. When a cornice "collapses", it breaks in from the cornice to the top of the peak;
White Oak Ridge-Terrapin Mountain areas, Apple Orchard Mountain and Camping Ridge. Special biological areas have large biological diversity with rare fauna and significant forest communities. There is a small track of old growth forest near Camping Ridge, and large tracts on and east of Onion Mountain. Much of the northern side of Terrapin Mountain and Camping Ridge between Camping Gap and the Thunder Ridge Shelter are at least 140 years old. The deep forests offer habitat for black bear, salamanders, trout, and other species dependent on this habitat. Wild natural trout streams in Virginia are classified by the Department of Game and Inland Fisheries