Supraglacial Lake and Moulin (IMAGE) Cornell University Caption This is an example of a supraglacial lake and rivers on the surface of the Greenland Ice Sheet. The water flows down a hole (a moulin) in to the ice sheet in the center right. Credit Thomas Nylen, NSF, 2007 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.