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. They result from glaciation and are frequently filled with lakes, rivers, sand traps on golf courses, kettle lakes (water hazards) and other natural features. https://sofas-and-couches07054.look4blog.com/68680483/15-sectional-u-shape-benefits-everyone-must-know