What Are U Shaped Valleys? A U-shaped valley is a geomorphological formation with high, steep sides and a flat or rounded valley bottom. They are the result of glaciation, and are usually home to lakes, rivers, sand traps on golf courses kettle lakes (water hazards), and other such natural features. https://www-sofasandcouches-com52723.creacionblog.com/29679525/what-s-the-reason-everyone-is-talking-about-sectional-u-shape-right-now