Rongbuk Glaicer (IMAGE) University of California - San Diego Caption This is the main Rongbuk Glacier on Mount Everest in 1921 and 2007. It experienced average vertical glacier loss of 101 meters (331 feet) between 1921 and 2008. Credit (1921) Courtesy of Royal Geographical Society, (2007) Courtesy of Glacier Works. 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.