The Japanese Stonehenge

Abstract: This report provides a comprehensive structural and mathematical deconstruction of the underwater megalithic sites off Yonaguni Island (Japan) and the Penghu Islands (Taiwan). By applying principles of structural mechanics (Strength of Materials) and logistical analysis, the author identifies a consistent modular system based on a 0.25m and 0.05m grid. The study concludes that these sites are not natural formations or religious temples, but components of a high-tech, standardized maritime port network built using geopolymer casting techniques during the Shang Dynasty era (approx. 1000 BC).