Persona (14)

Still alive ?
Who was the famous playwright poet ?
A murderous plot disguised as suicide ?
Her Disappearance
Poisoned ?
The mysteries of the Third Reich
The prince of darkness
The engineer of the future
The discovery of America
The Predictions of Michel de Nostredame
The Child Who Came From None
Premonitorial Signs Announced His Death ?
Has He Existed ?
The Mystery Still Hovers

Science (11)

The Disappearance
Are we alone ?
Who are our ancestors ?
Fiction or Reality ?
The Practitioner of Yoga
Are Black Holes Time Breaches?
Where is the Cemetery ?
Do Stars Dictate Our Destiny ?
500 KM of Geoglyphs
Fabulous Treasures Buried Underground ?

Ufology (4)

UFO crash in New Mexico
The Most Secret Military Zone In The World
Extraterrestrials Live Among Us
Dogons in Contact With Aliens ?

Parapsychology (11)

The Sixth Sense of People
The Gift of Foreseeing the Future
Emotional Forcefields
The Meaning of Dreams
A Premonition 14 Years in Advance
A Form of Psychokinesis ?
Can The Mind Move Objets ?
And Thy Fear of Nothingness
Can A Person Be Two Places At Once ?
Pain As Offering For Lord Murugan

Mysterious Place (16)

The Moai of Rapa Nui
The Lost City
City of the Cosmos
A City Dug In The Rock
A Celestial And Sacred Place
Magical City
The Secret Fortune of the Abbé Saunière
Ayers Rock
A vestige of Lemuria ?
King Solomon's Great Hidden Treasures
The Secret of the Astronaut
In Search Of Eldorado
What Are Menhirs For ?
The Work Of Mother Nature ?
Conquering Cancuen
The Mayan Astronomers ?

Egypt (10)

What killed the young pharaoh ?
What Secret Hides the Legendary Monument ?
A Monument That Defies Time
Bitten By A King Cobra?
What Has Become Of The Beautiful Queen Of Egypt ?
Assassinated By His Womens ?
The Books Written By The Gods
And the Mysterious Book of the Dead
The Valley of the Kings Abandoned ?
A Mythical Country of Ancient Egypt ?

Cryptozoology (11)

Mythology and Symbolism
Is It Real ?
The Abominable Snowman
The Goat Sucker
The Deadly Song of the Fish Woman
The Legend of Sasquatch
Are They Simply Tales ?
Voodoo and Golems - Myth ?
Serial Killer of the Eighteenth Century ?
A Mythological Version of Kongamato ?

Strange Phenomenon (9)

Mysterious disappearances
The Ghost Ship
Spiritism and Ghosts
The Feeling of Already Seen
Ghosts and Haunted Houses
Exorcism of the Demons by a Shaman Priest
Mysterious Explosion in Siberia
The Route Without Gravity ?
Apparitions Or Hallucinations ?

Bible and Religion (13)

Who Wrote It ?
A Matter of Faith ?
Guardians of the Secret
The Sinner Denigrated by the Church
Fallen Angels
The Marks of Christ
Universal Deluge
The Dead Sea Scrolls
And The Star of Bethlehem
Where Is It ?
The Sources Of The Arcanes
Where is the Ark of the Covenant ?

Magic (4)

Grimoire and Rituals
The Book Of Laws Of The Dead
Mediator Between the Spiritual and Material World
Origin of Misfortunes

Monument (8)

Did They Really Exist ?
What Did It Look Like ?
Has It Existed ?
The Mystery of Marian Cult
A Monument Filled With Mystery
The Holy Grail in Italy ?
The Fortress Of Love

Legend and Myth (9)

The Lost Continent
A Site of Legend
Just a Myth ?
The Lost City
The Fabulous Land Of Gold
And The Legend of Sherwood
The Modern Prometheus
The Eternal Saga
The Legend of the Treasure Well

History (8)

The Book That Lit The Pyres
Historic Reality ?
Vikings - In America Before Columbus?
The Greatest Political Scandal of the United States
The Lost Colony
Who Is This Enigmatic Smiling Woman ?
Marinus Van der Lubbe Guilty ?

Relic (3)

An Endless Quest
Esoteric Nazism

People and Civilization (6)

The Oldest Civilization of Meso America
The Decline of the Mayan Civilization
The People of Amma
The Celtic's Spiritual Elite
A Kingdom Without Men
The Mysterious Destiny of a Tribe

Disappearance (3)

A Great Aviator Missing
What Happened To Him ?

Cold Case (3)

Who is Behind The Murders ?
The assassination of John F Kennedy
Who Killed Lady Diana ?

Conspiracy Theory (1)

The Conspiracy Theory

France (3)

Has She Risen ?
Eustache Dauger
Ogre or Bluebeard ?

Yonaguni Underwater Monument

Ruins of an Ancient Pyramid ?


In the oceanic abyss of the Japanese archipelago of Ryukyu lies a very ancient mystery. Off the small island of Yonaguni, during a scuba diving, the explorer Kikachiro Aratake made in 1985 a sensational discovery: a majestic rock formation, a sort of underwater pyramid, apparently shaped and sculpted by human hand. This exceptional discovery immediately raised questions about the dating of this unusual structure as well as the identity of the builders who erected this forgotten temple at the bottom of the ocean.


Yonaguni underwater pyramid

Pyramid of Yonaguni

After years of research coordinated by Masaaki Kimura, professor of oceanography at the University of Ryukyu, datation of the underwater ruins seem to identify a single block of carved stone, 20 meters high, 200 meters long and 150 meters wide. The structure is pyramidal with vast terraces, stairs and authentic avenues inside. Some geologists claim that the Yonaguni monument can only be the work of nature: a combination of natural underwater events could have caused a spectacular and geometric erosion of the submerged pyramid. According to Professor Kimura, however, there are two possible scenarios that agree with two plausible dates. In the first scenario, the entire area would have been submerged during the melting of the glaciers of the last glaciation, with the consequence of rising sea levels 10,000 years ago. According to this hypothesis, a very ancient civilization would have been destroyed during the climatic upheaval. In the second scenario, on the other hand, the Yonaguni ruins could date back to more recent times: between 4000 and 400 BC. In this case, its fall to the bottom of the ocean would be the consequence of one of the devastating earthquakes and tidal waves that regularly affect this region.

The legend of Taro Urashima

Okinawa turtle back tomb

The inhabitants of the island relate an ancient local legend recounting the exploits of Taro Urashima, the hero who had been carried under water on the back of a turtle to the “palace of the god of the sea”. It is precisely this animal which seems to have been carved inside the Yonaguni underwater ruins ; indeed, a section of the underwater pyramid is called the “Sacred Area” because of some strange discoveries that took place inside: a stone bird, a triangular basin and a rock carved in the shape of a turtle, very similar in kamekobaka, the tortoise shell tombs typical of the Okinawa tradition.


A very strange underwater monument

Ruins of Yonaguni

Bounded by a wall which only opens a vaulted door, a circular path 6 meters wide and 15 meters in short diameter around the central body of Yonaguni - a tiered structure. On the outside of this ring which defines the perimeter of the main underwater pyramid, rise five other smaller buildings. The facade of the building is oriented to the south and it is from there that the stairs lead to the “Sacred Area” (to the east) and to the “Terrace” (to the west), the latter being characterized by sections of rock perpendicular to each other and perfectly cut at right angles. At the highest level of the underwater ruins, there are three large cylindrical holes that can support large pillars, perhaps collapsed, and a hatch which gives access to a sort of burial chamber below. Another structure, called Goshintai, contains a fascinating stone which, according to some researchers, could have functioned as a very ancient sundial. Outside the main complex, all the other constructions are connected by paths, like the one leading, for example, to this impressive megalith which reminds one of the moai of Easter Island. It is 7 meters high, and on its upper part, incisions are made which seem to evoke the features of a face and two horizontal cracks called "Jacques' eyes" in honor of Jacques Mayol, the great French freediver who died and who was in love with the Yonaguni underwater pyramid.


A lost civilization?

Could the enigmatic Yonaguni underwater ruins be the work of nature ? Or should we rather think of a civilization which would have disappeared thousands of years ago, without leaving any other trace of it, apart from this underwater pyramid? Among the proponents of the human hypothesis, many invoke the legend of Mu, the hypothetical continent which would have existed in the distant and forgotten past, before disappearing in the Pacific - precisely between Japan and South America. The only thing we can be sure of is that on the dates provided by scientists as possible periods for the realization of Yonaguni underwater ruins, no advanced civilization was established on the Japanese island. It seems that the truth about the Yonaguni pyramid is well kept at the bottom of the ocean.