I must say right away that there are many megaliths, but the part where the processing is rough and primitive, I think, should be ignored and paid attention only to individual objects.
The most obvious thing in this park is, of course, the Masadu Iwafun megalith (material - granite). It is not only the most incredible megalith in Japan, but in the entire world, at least in my opinion.
The megalith weighs about 800 tons, length 11 meters, width 8 meters, height - 5 meters. As many know, from above in the megalith for unknown purposes they made depressions of the correct shape and decent depth.
Due to the fact that these holes are flooded with water, scientists began to claim that this is just an ancient granite bath. But how to do this in granite using only primitive tools is difficult to answer.
I wrote about this megalith in some part of the largest megaliths in the world, but there I did not note one thing - traces on the back. There are strange footprints on two parts of this stone, which raise no less questions than the purpose of the object.
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Perhaps these traces remained about natural impact, it is difficult to answer, but obviously, this is not the most interesting thing. The megalith itself is qualitatively processed and has a lot of weight, and it is not known where it came from in the jungle, to put it mildly, in a not very crowded place.
Not far from Masadu Iwafun there is another interesting megalith, smaller in size. The object, named Sakafune Ishi, represents something like a small slab with lines connecting small carved shapes.
It is logical to assume that all this was created for water, but then the question is different, why? And the truth is, everything looks as if in the megalith, water should pass along these lines, but it is still difficult to explain the meaning.
Although the ritual purpose already looks much more plausible and it is likely that it was so. Although it doesn't look like rough processing and creation of all elements. But let's move on.
In the same park there is one interesting, seemingly ordinary stone, but with a carved interior. The inner surfaces are smooth and 60% of the megalith can be seen simply carved out. I don't think that this can be explained by rough work, and there was hardly any strong need for this.
Perhaps I do not know all the objects of this park, but it seems like, out of the processed at a really high level, there remains a granite sarcophagus, which I wrote about in one of my previous articles.
In a previous article on sarcophagi, I wrote that there is only one photo of this most incredible granite product in Japan, but I was wrong.
There is another shot, apparently taken from a quadcopter. True, from this photo everything is not very clear, but there is a sarcophagus and this is the main thing.
The lid of the granite sarcophagus is made with perfect symmetry, polishing and at an incredible level of processing, which cannot be achieved with primitive tools, no matter how many “experts” there are, this is a fact.
Now this section of the park with the sarcophagus is already closed to the public, and as far as I know, even ordinary tourists were not allowed there before, not to mention the researchers.
Well, in the end, I'll just show one of the objects with a fairly rough processing, although to be honest, there seems to be no processing there at all. These are simply sketched stones of huge dimensions and a structure supposedly created for burials.
The only thing that raises questions is the lifting and moving of such stones. But if you pay attention to other objects of the park, then the size and processing are impressive.
From this I draw a logical conclusion that this is the work of civilizations of different levels. Officially, everything in the park dates back to the period 1300-1400 years ago, but this is very doubtful. Another common version is that the processed megaliths of unknown purpose are at least 10,000 years old, although this also cannot be confirmed by anything.
