August 31

According to the journal Science “…the broad chasm is up to 2,600 feet (800 meters) deep and 6 miles (10 km) wide, similar to America’s Grand Canyon in scale… The distinctive V-shaped walls and flat bottom suggests water carved the buried valley, not ice…  The canyon predates the ice sheet that permanently covered Greenland about 1.8 million years ago.”   The accompanying graphic is a 3-D image.   For the full article, follow this linkImage courtesy of J. Bamber, University Bristol

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