Unsolved Mysteries of Underwater Pyramid In Japan

Submerged stone structures lying just below the waters off Yonaguni Jima are actually the ruins of a Japanese Atlantis—an ancient city sunk by an earthquake about 2,000 years ago. That's the belief of Masaaki Kimura, a marine geologist at the University of the Ryukyus in Japan who has been diving at the site to measure and map its formations for more than 15 years. 

One of the greatest discoveries in the history of archaeology was made last summer, off Japan There, spread over an amazing 311 miles on the ocean floor, are the well-preserved remains of an ancient city. Or at the very least, a number of closely related sites. A structure thought to be the world's oldest building, nearly twice the age of the great pyramids of Egypt, has been discovered. The rectangular stone ziggurat under the sea off the coast of Japan could be the first evidence of a previously unknown Stone Age civilisation, say archeologists. The monument is 600ft wide and 90ft high and has been dated to at least 8000BC. The oldest pyramid in Egypt, the Step Pyramid at Saqqara, was constructed more than 5,000 years later. The structure off Yonaguni, a small island southwest of Okinawa, was first discovered 75ft underwater by scuba divers 10 years ago and locals believed it was a natural phenomenon.

Professor Masaki Kimura, a geologist at Ryukyu University in Okinawa, was the first scientist to investigate the site and has concluded that the mysterious five-layer structure was man-made. "The object has not been manufactured by nature. If that had been the case, one would expect debris from erosion to have collected around the site, but there are no rock fragments there," he said. In the waters around Okinawa and beyond to the small island of Yonaguni, divers located eight separate locations beginning in March 1995. The discovery of what appears to be a road surrounding the building was further evidence that the structure was made by humans, he added.  

That first sighting was equivocal - a provocative, squared structure, so encrusted with coral that its manmade identity was uncertain. Then, as recently as the summer of 1996, a sports diver accidentally discovered a huge, angular platform about 40 feet below the surface, off the southwestern shore of Okinawa. The feature’s artificial provenance was beyond question. Widening their search, teams of more divers found another, different monument nearby. Then another, and another. They beheld long streets, grand boulevards, majestic staircases, magnificent archways, enormous blocks of perfectly cut and fitted stone - all harmoniously welded together in a linear architecture unlike anything they had ever seen before. 

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