An underwater "Grand Canyon" has been discovered in images captured by a Royal Navy survey vessel.
HMS Enterprise found the 250m-deep canyon in the Red Sea during a nine-month mission to improve understanding of the waters east of Suez. The 3D images were created after the vessel left the Egyptian port of Safaga and were made using a multibeam echo sounder.
Derek Rae, commanding officer of HMS Enterprise, said: "These features could be the result of ancient rivers scouring through the rock strata before the Red Sea flooded millennia ago.
http://www.independent.co.uk/news/world/africa/navy-finds-underwater-grand-canyon-8508642.html
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