![Beaverhead Mountains, Glacial Features: These U-shaped valleys and knife-edge ridges, or aretes, were carved by thick, slow-moving glaciers during the last glacial period about 18,000 years ago.](https://www.sciencepartners.info/wp-content/uploads/2012/08/landforms02-640x360.jpg)
Landform Examples
Time & Landscape
News Flash! When it comes right down to it, landscape development is all about time. While water, ice, wind and plate movements carve out the hills and valleys outside our windows, time is the key factor. How long do you think it took for the U-shaped valley at the beginning of this module to form? […]
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