Keystone Cuts Illustrated - Part 2

Gösta Lindwall, March 10, 2020

This post was originally published on Facebook in the group Forbidden Archaeology and other Mysteries.

Updated illustration of the process of making clamps for Keystone Cuts

Updated illustration of the process of making clamps for Keystone Cuts

I have got a lot of response on my previous sketch and have updated it accordingly. This is the result so far after response from the Swedish Casting Society and input from multiple members of this group.

I was aware of different theories about the process, and I have found credible references to use of geopolymers and pre-shaped clamps from various sources.

One source claims that it has been proven chemically that melted metal was poured into the keystone cuts, but I haven’t found any scientifically presented references to this.

My illustration must therefore be seen as one possibility among others. I will probably create a comparative illustration showing the three main hypotheses on the construction work.

I am researching geopolymers and contemplating the practical applications. Why did they construct blocks and not whole wall sections as is done today? Was there a volume limitation on the mixer? Why did they place metal clamps on the top level of the blocks? Some stones with keystone cuts weighs hundreds of tons? You would need more than a porride ladle to mix that?

And the use of pre-constructed metal clamps in keystone cuts also raises questions. The cuts are not uniform, so you would probably need to do a lot of shaping of the metal for it to fit. Or maybe they poured led in around the copper clamp to make it fit, but that is not what has been found in the metal composition I have read about.

The search goes on.

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