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Situated 68 miles beyond the east coast of Taiwan, Yonaguni Islands are a remarkable place for its rugged and mountainous coastlines. The special attraction is the submerged ruins located in the southern coast of Yonaguni: a superb 100×50x25 meters man-made artifact out of solid rock slabs stands erect at right angles. Its is estimated to be around 8000 years old, which is remarkably early for the kind of technology that has been used for carving it.
The one from japan 8000 years old or is this not right ?