Glaciated valleys and fjords are probably the most common results of glacial movement. Glacial erosion causes a number of notable geographical features that are normally unique, because of the enormous friction caused by the glaciers and the rocks and sediment from other places that glaciers bring along with them.
The most famous example of glacial erosion occurs on the Matterhorn in Switzerland. The Matterhorn displays cirques, aretes and horns, all of which are caused by glaciers. Cirques are rounded hollows like bowls with steep faces that can be seen after glacial melt. Aretes are narrow ridges caused by two glaciers eroding away rock at the point of meeting. Horns are sharp pointed peaks left behind when a number of glaciers erode the edges of a mountain until only aretes are left leading up to the top.