Earlier quoted context omitted.
Supposedly there is, "Irtysen Stele", "Sehel Stele" and "Famine Stele": https://www.geopolymer.org/archaeology/pyramids/pyramids-2-t...
I don't know anything about rocks, but it's very hard for me to take this website seriously when their FAQ repeats several times word for word ( https://i.imgur.com/B0VojAZ.png ): > If it is not convincing enough: Recent scientific studies using very powerful and modern equipment found the ultimate evidence that the pyramids stones are synthetic. Believing in the artificial stone theory, or countering it, is simply n…
You can find videos of them on youtube actually making these stone blocks though. The method works. Based on how long it took a small team to make a couple on their first attempt, it could be a hundred or even thousand times more efficient than carving them out and transporting them.
So if I were going to build a large limestone pyramid that's how I would do it.