Scientists have discovered a massive canyon hidden almost two kilometers under Greenland’s ice cap.
The canyon is at least 750 kilometers long and, according to the U.S. space agency, NASA, has the characteristics of a winding river channel. In some places the canyon is 800 meters deep, which is on a similar scale as the Grand Canyon.
NASA says the canyon was made before the ice formed over much of Greenland.
“One might assume that the landscape of the Earth has been fully explored …
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