Well-known faces are the east and north, visible from the area of Zermatt, although mostly hidden from the Mattertal by the chain of the Weisshorn. The east face is 1,000 metres high and, because it is a long, monotonous slope of rotten rocks, presents a high risk of rockfall, making its ascent dangerous. The north face is 1,200 metres high and is one of the most dangerous north faces in the Alps, in particular for its risk of rockfall and storms. The south face, well visible from the Valtournenche, is 1,350 metres high and offers many different routes. The west face, the highest at 1,400 metres, has the fewest ascent routes and lies in a more remote area than the other faces.