What Are U Shaped Valleys? A U-shaped valley is a geological formation with steep, high sides and a rounded or flat valley bottom. These valleys are formed by glaciation. They usually contain lakes, rivers, sandtraps on golf course, kettle lakes (water hazards), or other natural features. The erosion of glaciers https://www-sofasandcouches-com99968.blogitright.com/29953946/it-is-the-history-of-sectional-u-shape-in-10-milestones