The world is filled with unsolved mysteries, and one of the most intriguing ones sits quietly beneath the ocean’s surface—known as the Yonaguni Monument.
This massive, pyramid-like formation lies 25 meters below sea level near the Japanese island of Yonaguni. Its shape and structure have sparked debate among researchers and history enthusiasts for decades.
The monument was first discovered in 1987, and it gets its name from its proximity to Yonaguni Island, which lies at the westernmost point of Japan’s territory.
“Upon discovering it, I realized that this would become a treasure of Yonaguni island. I kept it a secret. I didn’t tell anyone on my staff.”
Some experts now believe the monument may date back as far as 10,000 years. That’s led to even more curiosity, especially since the structure features what look like staircases, flat platforms, and sharply carved angles—things you’d expect in something man-made.
Because of these details, some have started calling the Yonaguni Monument “Japan’s Atlantis” and even argue that it might be older than both the Egyptian pyramids and Stonehenge.
He went on to say, according to the New York Post: “If this really was built by a mysterious civilization more than 10,000 years ago, it would place Yonaguni in the same league as Göbekli Tepe in Turkey – one of the oldest known man-made structures, dated to around 9500 BC.”