Yonaguni Monument
The Yonaguni Monument (Japanese: 与那国島海底地形, Hepburn: Yonaguni-jima Kaitei Chikei; lit. 'Yonaguni Island Seafloor Topography'), also known as the Yonaguni (Island) Submarine Ruins (与那国(島)海底遺跡, Yonaguni(-jima) Kaitei Iseki), is a submerged rock formation off the coast of Yonaguni, the southernmost of the Ryukyu Islands, in Japan. It lies approximately 100 kilometres (54 nmi; 62 mi) east of Taiwan.