Bedrock Erosion (IMAGE) University of Washington Caption This photo shows fluting and pothole formation in the bed of the channel. The survey rod in the foreground is 1.1 meters long. Credit Brian Collins/University of Washington Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.