Mega-Canyon under Greenland Ice Sheet … It’s Longer Than the Grand Canyon


08/28/2013 08:00 PM EDT
Data from a NASA airborne science mission reveals evidence of a large and previously unknown canyon hidden under a mile of Greenland ice.

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.

“One might assume that the landscape of the Earth has been fully explored and mapped,” said Jonathan Bamber, professor of physical geography at the University of Bristol in the United Kingdom, and lead author of the study. “Our research shows there’s still a lot left to discover.”

TO READ MORE:     NASA Data Reveals Mega-Canyon under Greenland Ice Sheet


What’s a Muskox? Check out these pre-historic animals that roam in the far north

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Muskox (Ovibos moschatus) are native to Alaska though the entire Alaskan population was wiped out


as a result of hunting in the late 19th and early 20th centuries.  They were re-introduced to Alaska in the mid 1930’s from populations in Greenland. Their name is derived from the musky smell omitted by males to attract female breeding partners. Breeding generally takes place between July and October. Bull muskox stand 5′ tall at the shoulder and average 600-800lbs in weight while females stand 4′ at the shoulder and weigh in at 400-500lbs. Muskox are bovids and like common cattle have a chambered digestive system called a rumen.  When I was a boy I was told cows, for instance,  had a four chambered stomach but it works a bit differently than a human stomach.  The rumen essentially ferments the often carbohydrate rich and protein deficient vegetation consumed by muskox in order…

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