What Are U Shaped Valleys? A U-shaped Valley is an ancient geological formation with high, steep sides and an elongated or flat valley bottom. They result from glaciation and are frequently filled with lakes, rivers and sand traps on golf courses, kettle lakes (water hazards), and other such natural features. https://sofas77626.tusblogos.com/29899271/10-top-books-on-sectional-u-shape