Submerged Enigma: Yonaguni Monument Triggers a 10,000-Year Debate

A 150-by-40-by-27-meter stone formation off Yonaguni Island, discovered in 1986, has sparked a decades-long dispute between researchers who view it as a natural sandstone feature shaped by earthquakes and erosion and Masaaki Kimura’s claim that it could be a deliberate 10,000-year-old human construction with roads and terraces, though no artifacts have been found. The site lies in a seismically active region and, despite extensive exploration, lacks conclusive evidence of civilization, leaving the mystery unresolved and fueling ongoing debates in archaeology.