What Are U Shaped Valleys? A U-shaped valley is a geomorphological formation that has steep, high sides and a flat or rounded valley bottom. They are the result of glaciation and are frequently home to lakes, rivers, sand traps on golf courses, kettle lakes (water hazards) and other natural features. https://sofasandcouches-com91244.theblogfairy.com/29325854/how-to-make-a-successful-sectional-u-shape-tips-from-home