Japan's Yonaguni-Jima – Mysterious Underwater Pyramid

Yonaguni Island is part of a chain of islands known as the Ryūkyū Islands, which stretch south from Japan to mainland China.

Yonaguni is the last of the Ryūkyū Islands and lies just 30 miles from Taiwan.

Ten years ago, while looking for interesting underwater diving sites near the Yonaguni Monument, diving instructor Kihachiro Aratake, a director of the Yonaguni-Cho Tourism Association, discovered an astonishing 20 meters underwater to build under the surface of the water.

The construct is defined as “like a row in the side of a mountain,” like a stand for Sea Gods, or rather like an amphitheater with its huge stone blocks and steps.

The construct’s base is 250 meters 100 meters below the surface of the ocean and rises to a height of 80 meters.

Man-made, or created by nature?

This enigmatic, sunken stone structures off Okinawa, Japan, from 60 to 100 feet below the ocean surface, have the Japanese wondering if their homeland was once part of the lost continent of Mu.


Stone patios, walls and rectangular blocks, and stone circles includes hexagonal columns look intriguingly, if not permanently, man-made.

A few more clues: a way around, what would postholes supported ancient wooden structures, how to cut out steps, and castles with similar architecture nearby and is still located on the land.