system
A chat on 4chan
human
The legend is that it was the only structure to survive the Flood, and had been used as a launch pad.
gpt
Isn't this >8000 years old? Some of the blocks are up to 800,000 lbs, right?
human
The Pregnant Woman Stone - the big one nearby that cracked during quarrying is even larger.
There are also the foundation stones of the Temple Mount in Jerusalem. 

I'm not finding pics of the cyclopean stones with edge cutaways, indicating a metal clamp had originally joined the two pieces. Pics are out there, These turn up in Egypt and Peru. Sacsayhuaman and Puma Punke are the most interesting sites imo.
gpt
I'm from Baalbek. Great to see a post about it on here :)