What Are U Shaped Valleys? A U-shaped valley is an edifice of geology that has steep, high sides and an elongated or flat valley bottom. These valleys are created by glaciation. They are often filled with lakes, rivers, sandtraps on golf courses, kettle lakes (water hazards) or other natural features. https://www-sofasandcouches-com41744.blogprodesign.com/51845491/say-yes-to-these-5-sectional-u-shape-tips