7 Mysterious Discoveries That Left Even Archaeologists Baffled

The Yonaguni Monument

Discovered by a scuba diving instructor Kihachiro Aratake after he plunged into the water off the coast of the Japanese island of Yonaguni in 1986, the unsolved underwater mystery became known as ‘Japan’s Atlantis.’ A series of monoliths terraced into the side of a mountain lay six meters below the surface of the ocean. The gigantic rectangular formations with strikingly perfect 90 degree angles, straight walls, steps and columns are believed to be the remains of an ancient city that sunk due to seismic events thousands of years ago. Still, no one knows for sure.