What Divers Discovered at the Bottom of "The Great Blue Hole" in Belize

Published April 2, 2020:

"The Great Blue Hole off the coast of Belize is the world's biggest ocean sinkhole, measuring 1,000 feet across and over 400 feet in depth. It formed thousands of years ago as a limestone cave."

"There were...these odd tracks, crisscrossing circles right around the center of the hole with no indication of what had made them,..."

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