Is this the real-life Atlantis. A 90-foot “pyramid” submerged just off the coast of Japan is turning heads — and could shake up everything we thought we knew about ancient civilizations. Sitting 82 feet below sea level near the Ryukyu Islands, the Yonaguni Monument has baffled scientists and divers since it was first discovered in 1986. The enormous stone structure, complete with angular steps and flat terraces, looks uncannily like the ruins of a man-made temple — despite being over 10,000 years old. That timeline, if proven accurate, would date it thousands of years earlier than Egypt’s pyramids or England’s...