What Are U Shaped Valleys? A U-shaped valley is an geological formation with steep, high sides and a rounded or flat valley bottom. These valleys are created by glaciation. They are often filled with lakes or rivers, sandtraps along a golf course kettle lakes (water hazards), or other natural features. https://www-sofasandcouches-com01210.blogunok.com/30042834/8-tips-to-up-your-sectional-u-shape-game