Beneath Antarctica's vast expanse of ice sit hundreds of canyons, some up to tens of thousands of feet deep. These complex formations under a seemingly barren landscape play a significant role in global climate change and ocean circulation — and studying them could lead to better climate models and predictions.

Rolling in the deep

Scientists have mapped 332 underwater canyons in Antarctica , according to a research article published in the journal Marine Geology . Some of these are deeper than 4,000 meters (over 13,000 feet). Antarctic submarine canyons "resemble canyons in other parts of the world," David Amblàs, a part of the Consolidated Research Group on Marine Geosciences at the University of Barcelona and one of the authors of the article, said in a statement . "But the

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