What Are U Shaped Valleys? A U-shaped valley is a geological formation that has steep, high sides and a rounded or flat valley bottom. They result from glaciation and are frequently filled with lakes, rivers, sand traps on golf courses, kettle lakes (water hazards) and other natural features. Glacial erosion https://sofasandcouches15605.link4blogs.com/51823680/5-sectional-u-shape-leÃÂ-ons-from-the-pros