Mysterious pyramid sinks under the sea

The Yonaguni Monument architectural complex was first discovered in 1985, located underwater including stone steps and pyramids, located off the coast of Yonaguni, in the southernmost of Ryukyu Island, Japan.

The pyramids, about 27 meters tall, are made of mudstone, thought to form at the end of the Ice Age 10,000 years ago when the population rose above the sea surface.

This is a controversial work over the past 30 years. Researchers cannot explain the formation of this population at the bottom of the Pacific Ocean.

Some say that this is a work created by "aliens", others consider it to be an artificial product.

The work has been controversial to determine that this is an artificial product of the ancient people or aliens

Meanwhile, according to a team of experts from the Ryukyu University, this architectural complex is the remains of a submerged city. Ancient people built the building before it was invaded by seawater more than 2,000 years ago. There are still traces of pottery, stone tools as well as fireplaces ...

Only professional divers can access the building

Close up of the stairs of the pyramid at the bottom of the sea

Located at the center of the population is the pyramid, surrounded by smaller structures. Currently, Yonaguni Monument populations are at a depth of 30 m, only accessible by professional divers.