GREENLAND De Geer Glacier - April 5, 2014: Calving front of the De Geer Glacier in eastern Greenland captured during the Apr. 5, 2014, IceBridge survey flight by the Digital Mapping System instrument aboard NASA P-3 research aircraft. The Digital Mapping System (DMS) uses a pair of downward pointing cameras to build high-resolution image maps of the surface - Picture by Atlas Photo Archive/NASA