Yonaguni

Yonaguni is one of the and the westernmost inhabited island of Japan. The island is most known for its underwater rock formations that leave academics divided over whether they are natural or artificial.

In 2012, Clay Kaczmarek wrote "Yonaguni" in the Cryptic Messages he left behind in the Animus Project laboratory of the Abstergo Campus in Rome, Italy, shortly before his death.

Reference

 * Assassin's Creed