A canyon longer than the Grand Canyon, was found buried under a Greenland ice-sheet…

A helicopter is taking off Greenland Ice Sheet

A helicopter is taking off Greenland Ice Sheet (Photo credit: Wikipedia)

The hidden canyon is up to half a mile deep, six miles wide and stretches for 466 miles beneath the country’s giant ice sheet.

It is thought to have been carved out by a meandering river more than four million years ago – at a time before ice covered the area and humans were just beginning to evolve from primates.

Read more here:

http://www.telegraph.co.uk/news/worldnews/europe/greenland/10275580/Canyon-longer-than-Grand-Canyon-found-buried-under-Greenland-ice-sheet.html

http://worldofcae.blogspot.com   The Green Planet blog

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