That being said, there's another group of people who feel that this monument is too large in scale, and has too much of the flat, parallel surfaces with sharp edges to resemble other examples. Masaaki Kimura is a marine geologist at a university local to the area, and he's of the mindset that the Yonaguni monument is what's left of an ancient Japanese metropolis that was sunk by an earthquake around 2,000 years ago.
Kimura describes the monument in an interview with National Geographic, "The largest structure looks like a complicated, monolithic, stepped pyramid that rises from a depth of 25 meters [82 feet]." He goes on to explain some more of his findings, which include sculptures meant to look like animals, stones covered in quarry marks, and likenesses of faces carved into the rock. Kimura continued, "The characters and animal monuments in the water, which I have been able to partially recover in my laboratory, suggest the culture comes from the Asian continent." According to National Geographic, Kimura claims "the structures include the ruins of a castle, a triumphal arch, five temples, and at least one large stadium, all of which are connected by roads and water channels and are partly shielded by what could be huge retaining walls."
The Japanese government has indicated no interest as of yet in designating the Yonaguni monument as a cultural property, and as such, the only glimpses we get of this potential Atlantis come in the forms of videos like the one below — interested divers who are anxious to document their findings. It's a cool clip, and you'll have to let us know what you thought. When you're done, be sure to share it with your friends on Facebook!
Source: http://expanse.collectivepress.com/diver-found-an-underwater-city-in-japan-and-experts-dont-know-how-it-got-there