#8. The Matterhorn, border between Switzerland and Italy 4,478 metres (14,692 ft.)
This iconic mountain, which looks like a horn rising out of the surrounding valleys, has one of the highest fatality rates of any peak in the Alps. This is caused by a wide range of factors, including technical difficulty, the prevalence of avalanches and rockfall, and severe overcrowding on routes during peak climbing seasons. These days the principle danger on the Matterhorn is its popularity, with overeager tourists sending loose rocks onto the heads of fellow climbers below.