Columbia Glacier (IMAGE) University of Zurich Caption Meltwater pounded at surface in accumulation zone, Columbia Glacier, Alaska, July 2008. Credit W. Tad Pfeffer Usage Restrictions None 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.