What Are U Shaped Valleys? A U-shaped Valley is an ancient geological formation with steep, high sides and an elongated or flat valley bottom. These valleys are formed by glaciation. They are often filled with lakes, rivers, sandtraps on golf course, kettle lakes (water hazards) or other natural features. Glacial https://sofasandcouches82715.blogripley.com/30465094/say-yes-to-these-5-sectional-u-shape-tips