Water Filled Canyon, Greenland
by Ian Joughin, Polar Science Center, Applied Physics Lab, University of Washington, Seattle, USA
Although snow has dammed outflow from the nearby supraglacial lake, nearby melt streams continue to fill sections of the canyon where snow has not accumulated. The canyon was formed by an outflow stream from the lake that flowed to a large moulin at the end of the canyon.
Ian Joughin (distributed via imaggeo.egu.eu)