A U cross-valley profile is typical of canyons and valleys eroded and deepened by alpine or valley glaciers.
Due to erosion at the glacier's base and margins, Alpine glaciers create broad valleys with relatively flat bottoms and steep sides. They are referred to as "U-shaped valleys."
Rocks are extracted and ground up by Alpine glaciers, resulting in recognisable U-shaped valleys and razor-sharp mountain peaks and ridges. A cirque is a mountainside hollow that can be found at a great height.
In hilly areas around the world, such as the Andes, Alps, Caucasus Mountains, Himalaya, Rocky Mountains, New Zealand, and Scandinavian Mountains, examples of U-shaped valleys can be found.
To learn more about Alpine glaciers, refer
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