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IPFS News Link • Science

Mega-Canyon Discovered Beneath Greenland Ice

09-07-2013 • arclein

The canyon has the characteristics of a winding river channel and is at least 460 miles (750 kilometers) long, making it longer than the Grand Canyon. In some places, it is as deep as 2,600 feet (800 meters), on scale with segments of the Grand Canyon. This immense feature is thought to predate the ice sheet that has covered Greenland for the last few million years.

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Reported By robert klein

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