top of page

Yonaguni’s Underwater Ruins – The Remains of Lemuria?



To the south of Japan there is an Okinawa archipelago known to many – it is a small island that “stretches” to the island of Taiwan. The last island of the archipelago is located approximately 100 kilometers from Taiwan, and it is called Yonaguri.

Underwater tourism is widespread here, and for several decades there is a reason why diving enthusiasts plunge into the depths of the waters more and more willingly.

Mysterious find and many years of controversy


Upper Monument Terrace



It all started back in 1985, when Kihachiro Aratake, a diving instructor, discovered a very strange object under water. It was a huge monument, which began off the coast and extended somewhere into the distance. Then Aratake was struck by ideal, as it seemed to him, lines: flat platforms, rhombuses, rectangles and terraces, which turned into large steps leading down.



The monument ended with a wall that went down 27 meters – to the bottom. This precipice was the wall of the trench, which stretched along the entire structure.

On the one hand, the monument could be attributed to the “joke of nature” that endowed it with so even lines and forms, on the other hand, Aratake had doubts. Suddenly the object was man-made?







The find was made public, and a long journey began from sensational headlines to the skeptical conclusion of scientists that there was never a civilization in the designated place, whose representatives could create such a monument

But, as usually happens, supporters of the theory of the man-made origin of the object were found, including the famous professor Masaaki Kimura. He studied the surroundings of Yonagumi for about 10 years, and did not hold the opinion of the artificial creation of the monument.

Then, Graham Hancock, who adhered to the theory of the existence of a highly developed civilization in antiquity, found out about the find. Together with Boston University professor Robert Shoch, Hancock sets off to explore the monument … And the opinions of his colleagues are divided.


Some parts of the monument do not look like “natural” objects



In favor of the natural origin of the monument is the fact that it consists of sedimentary rocks and sandstone – nothing unusual. And the forms that some scientists were so interested in could arise under the influence of water, wind and rain. Perfectly straight cracks could also appear solely due to the structure of the deposits.

Schoch adhered to the theory of the natural origin of the monument, and only later, when he and Hancock once again flew to Okinawa and met with Kimura, the position of the professor at Boston University “staggered.”


Arguments for the Artificial Origin of the Monument


Researchers also have a lot of questions about the origin of the well.




Kimura gives several arguments that may indicate the artificial origin of the monument. First of all, he notes that if the monument was formed in a natural way, then the blocks that were separated from the rock would not lie so “correctly”. They would fall differently, and gravity would play a huge role in this.

The theory of creating a structure through erosion does not stand up to criticism at all: in this case, there would be a lot of debris near the monument at the bottom, and there aren’t so many of them.</