The summit of San Jacinto Peak covered by a cornice formed by wind-blown snow.
In climbing, 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 on or under without adequate protection, or if other options are either not available or are more hazardous. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... San Jacinto Peak is the highest peak in Riverside County, California and part of the sheerest mountain face in all of North America. ... Snow is a type of precipitation in the form of crystalline water ice, consisting of a multitude of snowflakes that fall from clouds. ...
When a cornice collapses, it breaks in from the cornice to the top of the peak; even being on the snow on top of rock exposes you to hazard in this situation. The best practice in mountaineering is to stay far enough back from the edge so as not to be able to see the drop, as an approximate metric of exposure. Of course, this is not always possible. A good test for safety (in sunny weather) is to insert an ice axe and see if a blue glow comes out the hole. This indicates the ice is being lit from underneath, and that the climber should retreat to a safer location.
In classical architecture the cornice is the set of projecting moldings that crown an entablature.
In non-classical building practice, this function is handled by eaves and gutters, and in modernist architecture the elimination of the cornice has been important enough, often simply for demands of style, that elaborate internal drainage systems are provided.
A pediment is formed under the gable end of a building, where the cornice is carried across the wall at the height of the eaves and repeated above, under the roof line.
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