Ravines Cutting into the Drumlin (IMAGE) University of Gothenburg Caption This is a drumlin by the Múlajökull glacier on Iceland. The ravines cutting into the drumlin have given researchers an opportunity to study its structure. Credit Mark Johnson 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.