A 3-D view of the subglacial canyon, looking northwest from central Greenland.
The age of discovery isn’t over yet. A colossal canyon, the longest on Earth, has just been found under Greenland’s ice sheet, scientists announced Thursday in the journal Science. The great gorge meanders northward from Summit, the highest point in central Greenland, toward Petermann Glacier on the northwest coast, covering more than 460 miles (750 kilometers). Researchers think the ravine could be even longer, but they don’t yet have the data to prove where the canyon peters out deep under the interior ice sheet. “It may actually go farther south,” Bamber told LiveScience’s OurAmazingPlanet .…MORE