Yonaguni, definition and study. A-Z index of Cognitio.

Yonaguni is the westernmost island of Japan. The native name of the island. The island territory is entirely part of the homonymous Yonaguni town. The island speaks the yonaguni language, very different from other Ryūkyū languages. Some scholars hypothesize that Yonaguni was part of the continent towards the end of the last ice age. The style of the earliest archaeological finds, stone utensils found in the Tuguru Beach, suggests that the ancient inhabitants had contacts with the southeast Asian civilizations. Historically, the island has been a turning point for trade between Japan and Taiwan. The island became famous at the end of the 20th century after a vast stone structure known as the Yonaguni Monument was discovered on the seabed off the coast of the southern coast of the island. The discovery took place in 1987 when some divers entered the waters south of the island to study the large population of hammer sharks gathering in the area. It was the Japanese Kihachiro Aratake, during these dives that he discovered by accident what seemed to be an architectural structure, part of which is narrow between two pillars rising to eight meters from the surface. As a whole, the structures found recall Egyptian pyramids.Egypt, definition and study. A-Z index of Cognitio.

Since then, many scientists have studied the phenomenon, despite the presence of strong ocean currents, which make diving prohibitive. The seabed contains those that seem to be the ruins of a civilization formed at the end of the glacial era. There have been traces of flora, fauna, and stalactites that usually form only on the surface. Their resemblance to other finds in the ancient world has led some to theorize that they might be the remains of an ancient civilization dating to 10,000 years ago. The peculiar conformation of the rocks that make up the “monument” has given rise to controversy over its origin. According to some scholars, it would be the result of man’s work, a hypothesis that would involve the existence of an ancient civilization that disappeared. A group of scientists led by Professor Masaaki Kimura of the University of Ryūkyū studied the vestiges and Kimura came to the conclusion that the pyramids could have been man-made, as would confirm the finding of someone who assimilates to a “face” placed on one side of the structures. 

Pyramids, definition and study. A-Z index of Cognitio.


For now, there is no archaeological evidence to confirm this theory. If it were verified as human, the paternity of this structure would be about 7,000 years old before the first known civilization on Earth.

Earth origins, definition and study. A-Z index of Cognitio.

Earth origins

Among the supporters of the artificial origins of the underwater pyramids of Yonaguni, there are those who relate them to the mythical and disappeared continent Mu.

Theorists of the ancient astronauts, on the other hand, claim that this rock formation can be a sort of base for spacecraft used in ancient times by extraterrestrials.

Yonaguni, definition and study. A-Z index of Cognitio.



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