Hidden for all of human history?

[Michael.]

.

Hidden for all of human history, a 460 mile long canyon has been discovered below Greenland's ice sheet.


Data from a NASA airborne science mission has revealed an immense and previously unknown canyon hidden under a mile of Greenland ice.


"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 published in today's issue of Science.


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.




https://www.youtube.com/watch_popup?v=ENg9Hci9y3M

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[Knightofalbion]

I saw that on the BBC Ceefax yesterday. Fascinating.

How little we really know and understand about the world we live in - and ourselves...

 

[Diwundrin]

Fascinating find. I'd have bet it would have been pretty flat from compression of all that ice. I read somewhere that Antarctica is where the ice is deepest and that if it melted there'd be massive earthquakes as the ground was pushed back up to normal pressure. ... I think maybe I've read too much of that sort of stuff.

 

[JustBonee]

Would be nice to have a crystal ball for this ... It's really fascinating, and very strange, all the discoveries that are being found around the world at the present time... it seems to be coming at us very fast. ??

 

[dbeyat45]

Speaking of ice, anyone remember this story?
World War II Planes Found in Greenland In Ice 260 Feet Deep

http://www.nytimes.com/1988/08/04/u...-found-in-greenland-in-ice-260-feet-deep.html

Down 260 feet under the ice in 46 years and I thought Greenland was supposed to be melting ..... hmmmmm.

 

[That Guy]