Synopsis

To ascertain whether the submerged formations off Yonaguni Island, Japan's westernmost point in the East China Sea, were the product of geological processes or human construction, Gates journeyed to the island's ruins. Kihachiro Aratake, the discoverer of the Yonaguni Monument, dove with Josh, guiding him through the underwater landscape where precisely cut steps ascended to a flat platform. Josh collected a rock sample for geological examination. Later, in Osaka, archaeologist Michio Maezano pr