Above the Summit (IMAGE) University of Chicago Caption The summit of Karymsky Volcano stands at 5,000 feet, and it regularly sends ash to elevations of 25,000 feet and beyond. These eruptions are monitored both for scientific reasons and because the plumes of ash and dust pose a threat to commercial aviation. Credit Courtesy of Albert Colman Usage Restrictions News organizations may use this image in connection with reports about the work of Albert Colman and his associates. 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.