Kihachiro Aratake was diving off the coast of Yonaguni Island in Japan, looking for hammerhead sharks in the 1980s, when he made an incredible discovery. He found a vast underwater structure made of large, flat terraces and strange rock formations, only sixteen feet beneath the ocean’s surface at its tallest point. Until then, it had been undiscovered… now it’s one of the world’s most captivating mysteries. In this video, Unveiled explores the true meaning behind the Yonaguni Monument!