What Are U Shaped Valleys? A U-shaped valley is an geological formation with high, steep sides and a flat or rounded valley bottom. These valleys are created by glaciation. They are often filled with lakes, rivers, sandtraps on golf course kettle lakes (water hazards) or other natural features. Glacial erosion https://www-sofasandcouches-com61322.blogsuperapp.com/30306879/what-to-look-for-in-the-sectional-u-shape-that-s-right-for-you