What Are U Shaped Valleys? A U-shaped valley is a geological formation that has steep, high sides as well as a flat or rounded valley bottom. These valleys are formed by glaciation. They are often filled with lakes or rivers, sandtraps along a golf course, kettle lakes (water hazards), or https://sofasandcouchescom34318.weblogco.com/29875868/a-how-to-guide-for-sectional-u-shape-from-beginning-to-end