Main Page | See live article | Alphabetical index A cornice is an overhanging edge of snow on a ridge or the crest of a mountain which are built up by drifting snow. Cornices are extremely dangerous and should never be walked without adequate protection or if other options are not available or more hazardous. See also: List of climbing topics A cornice is the set of crowning moldings that cap an entablature in Classical architecture. It derives from the Italian word cornice meaning ledge. See also: Corniche This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.