10 Prehistoric Megaliths Underwater That Science Still Can't Explain
10 Prehistoric Megaliths Underwater That Science Still Can't Explain In nineteen eighty-six, a diving instructor named Kihachiro Aratake descended into the waters off Yonaguni-Jima, a small island at the southwestern edge of Japan's Ryukyu chain. He was not looking for anything in particular. What he found was a series of flat terraces, right-angle corners, and carved steps sitting on the seafloor twenty-five meters down, in water so clear the geometry was unmistakable from the surface.

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