By
Mark Prigg
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A massive ancient subglacial trough deeper than the Grand Canyon has been discovered under Antarctica.
Part of a massive ancient mountain range, it was found buried under several km of ice using specially developed penetrating radars.
The massive subglacial valley is up to 3 kilometres deep, more than 300 kilometres long and up to 25 kilometres across, and in places, the valley floor is more than 2000 metres below sea level.
All calm – the area above the giant mountain range, which is covered in upto 7km of ice
The massive subglacial valley is up to 3 kilometres deep, more than 300 kilometres long and up to 25 kilometres across, and in places, the valley floor is more than 2000 metres below sea