What Are U Shaped Valleys? A U-shaped valley is a geological formation with high, steep sides and a flat or rounded valley bottom. They result from glaciation and are often filled with lakes, rivers, sand traps on golf courses, kettle lakes (water hazards), and other such natural features. Glacial erosion https://couches59941.get-blogging.com/30294066/the-top-sectional-u-shape-gurus-do-three-things