7 Most Mysterious Places On Earth

Yonaguni Monument, Japan

Discovered only in 1987, this underwater rock formation is located off the coast of Yonaguni, Japan, and is best known in Japan as the “Yonaguni Submarine Ruins”. There is an ongoing discussion whether this site is natural or man-made, as many of the elements are hard to explain as anything but artificial. Such elements are the star shaped platform (in the picture), a 10 meters (33 ft) straight wall, a 7 meters (23 ft) tall stone column, and many more. Needless to say, it’s unknown who built the structures and when.

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