What Are U Shaped Valleys? A U-shaped valley is an ancient geological formation with high, steep sides and 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 other natural https://couch17921.yomoblog.com/36080965/how-to-know-if-you-re-prepared-for-sectional-u-shape