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;
Boise Ridge Boise Ridge Boise Ridge is a north-south trending forested ridge located in King County of Washington state. It is part of the Cascade Range and is set at the western edge of the range. Boise Ridge is situated four miles east of Enumclaw, Washington, west of Grass Mountain, south of Enumclaw Mountain, and north of Radio Hill. Precipitation runoff on the east side of the ridge drains into Boise Creek, a tributary of the White River, whereas the west side drains into tributaries of the Green River. Boise Ridge is located in the marine west coast climate zone of western