What Are U Shaped Valleys? A U-shaped valley is a geological formation with steep, high sides and a flat or rounded valley bottom. These valleys are formed by glaciation. They are often filled with lakes, rivers, sandtraps on golf course, kettle lakes (water hazards), or other natural features. The erosion https://sofasandcouches-com58622.csublogs.com/36128202/what-s-the-fuss-about-sectional-u-shape