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Massive canyon discovered buried under Greenland ice
30th August, 2013
Source - Latest news and comment from B
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A vast gorge in the Earth on the same scale as the Grand Canyon lies buried under ice in Greenland, scientists have learned.
The massive hidden canyon is at least 466 miles (740km) long and up to 800 metres (2,600ft) deep in places.
The feature, resembling a meandering river channel, is believed to pre-date the ice sheet that has covered Greenland for millions of years.
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