I first learned of the Japanese Pyramids by watching a documentary on the History Channel from the Incredible but True series. I found a thread from
2003 where this was discussed, but no one questioned whether it was natural or manmade.
Kihachiro Aratake discovered the formation in 1995 off the island of Yonaguni under 60 feet of water. The formation really does not resemble a
pyramid, but that is what most people refer to. The main structure called the Monument and is 500 feet long and 8 stories tall.
Other similar formations have also been discovered in the local vicinity, which leads many to believe that they were created by humans. The last time
the area was above water was during the Ice Age when the sea level was lower, approximately 10,000 years ago. At this time, humans were believed to be
nomadic hunter gatherers, and a structure like this would require organized social behavior.
Jim Mower, an archeologist at University College London, said: "If it is confirmed that the site is as old as 10,000 years and is man-made, then this
is going to change an awful lot of the previous thinking on southeast Asian history. It would put the people who made the monument on a par with the
ancient civilization of Mesopotamia and the Indus Valley."
Here are some sites with pictures and articles.
In the documentary they showed evidence that the formations could have been made by water erosion. Along the coastline at the waters edge, the rocks
have step like erosion similar to the underwater structures. But, when I look at the pictures of the structures, it appears to me that there are
obvious signs of unnatural carving. I am not a geologist or archeologist, but would like to point out a few features, and let people respond as to
what they think.
First of all, they mention in the documentary that interior right angles cannot be natural, and I don’t see how this could have been created in such
a straight line and perfect width.
This sheer wall is many times taller than any naturally formed step.
These holes are of the same size. If they were natural, what are the chances of them being the same size? In the article they state the holes may have
The natural steps when formed also leave rubble at the base, and in this picture you will see there is none.
Many of the pictures like this one show steps, but they don’t seem to be organized, as in a normal staircase. So this leads me to believe parts of
the structure were formed naturally.
So, I have to agree with the conclusion discussed in the History Channel documentary that the main parts of the structures were probably formed
naturally, but then humans worked on them. They carved channels and postholes, and cleared the rubble. They cut the sides of the structure to make the
sheer walls. Maybe they erected wooden structures on top of them.
So let me know what you think. Any additional information would be appreciated.