Snow cornice even being on the snow on top of rock exposes the alpinist 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. In avalanche safety, cornices are a high avalanche danger as they often break and trigger larger avalanches that permeate several snow layers. Cornices are particularly vulnerable to collapse during periods of solar warming. Snow cornice A snow cornice or simply cornice (from the Italian cornice meaning "ledge") is an overhanging edge of snow
Rushup Edge Rushup Edge Rushup Edge is a ridge in the Derbyshire Peak District of England. The ridge's highest point is Lord's Seat at , while Mam Tor lies at its eastern end, beyond which the Great Ridge runs. Lord's Seat is a round barrow. Rushup Edge is part of the ridge which extends east to Mam Tor, Hollins Cross, Back Tor and Lose Hill, separating the Edale and Hope valleys. The ridge is formed of Namurian (c320mya) age Mam Tor Beds (alternating sandstone and siltstone) and landslides on the north have formed colluvium. In October 2014, mountain bikers, walkers, horse riders,