Friday, August 30, 2013
'Mega-canyon' discovered under ice in Greenland
[ Fri, 30 Aug 2013 00:38:52 GMT ]
Hidden beneath Greenland's ice sheet is a massive canyon that's more than 460 miles long and up to 2,600 feet deep at points. [Read more]
[ Fri, 30 Aug 2013 00:38:52 GMT ]
Hidden beneath Greenland's ice sheet is a massive canyon that's more than 460 miles long and up to 2,600 feet deep at points. [Read more]
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