Underwater Pyramid

In 1995, a Japanese diver was exploring off the coast of Okinawa and discovered a giant set of stone blocks underwater. Some believe it is a 10,000 years old human-made pyramid that sunk into the ocean after a giant earthquake or volcanic eruption. Others say that this is a natural phenomenon made from normal geologic processes. Atlantis or an imagination? See and read more at: https://news.nationalgeographic.com/news/2007/09/yonaguni-jima-japan-underwater-city/