Scientists in last week of August 2013 unveiled that they have discovered a vast canyon under the ice sheet of Greenland, which was previously unknown. The latest discovered canyon stretches in an area of over 750 kilometers and it up to 800 meters deep.
The canyon was discovered by the scientists using an air borne radar data, which was collected over a period of several decades to piece together the landscape beneath the ice. The hidden valley is longer than the Grand Canyon in Arizona.
The canyon spreads from the centre of Greenland up to the northern coastline. Scientists claim that before formation of the ice sheet it would have contained a river gushing into the Arctic Ocean, which was buried due to encroaching ice about 3.5 million years ago.
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