What Are U Shaped Valleys? A U-shaped valley is a geological formation that has steep, high sides and a flat or rounded valley bottom. They result from glaciation and are frequently the home of rivers, lakes and sand traps on golf courses kettle lakes (water hazards) and other natural features. https://couch91530.webdesign96.com/30308834/why-sectional-u-shape-is-everywhere-this-year