What Are U Shaped Valleys? A U-shaped valley is an edifice of geology that has steep, high sides as well as a flat or rounded valley bottom. They result from glaciation and are often the home of rivers, lakes and sand traps found on golf courses kettle lakes (water hazards), https://sofa18609.anchor-blog.com/10087289/what-s-the-reason-sectional-u-shape-is-everywhere-this-year