Yonaguni 与那国島海底地形 (Yonaguni-jima Kaitei Chikei): underwater structures in Japan may indicate human culture is older than we think

Yonaguni underwater structure


“The Yonaguni Monument is a massive underwater rock formation off the coast of Yonaguni, the southernmost of the Ryukyu Islands, in Japan. There is a debate about whether the site is completely natural, is a natural site that has been modified, or is a manmade artifact.[1][2]  The site is variably referred to as the “Yonaguni Underwater Formations” (与那国島海底地形, Yonaguni-jima Kaitei Chikei?) and the “Yonaguni Underwater Ruins” (与那国島海底遺跡, Yonaguni-jima Kaitei Iseki?) in Japanese.” (from Wikipedia)

Yonaguni stairs

Located near Taiwan