What Are U Shaped Valleys? A U-shaped Valley is an ancient geological formation with high, steep sides and flat or rounded valley bottom. These valleys are created by glaciation. They often contain lakes or rivers, sandtraps along a golf courses kettle lakes (water hazards), or other natural features. Glacial erosion https://wwwsofasandcouchescom53029.thekatyblog.com/29025086/all-inclusive-guide-to-sectional-u-shape