Morning Overview on MSN
World’s longest underwater cave system runs 524 km, dwarfing Grand Canyon
The world’s longest underwater cave system now stretches an astonishing 524 Kilometers, a hidden labyrinth that, in raw ...
Hidden beneath the surface, a pristine underwater cave can preserve traces of vanished worlds with a clarity that dry land rarely matches. In the still water and sealed chambers, sediments, bones, and ...
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