Bedrock Erosion (image) University of Washington Share Print E-Mail 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 Share Print E-Mail 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.