Thanks for that one!!
As far as I can tell, we only need to decide if they were using aggregate technology (which would mean many, many molds to cast into) .. or some type of coupled harmonics technology ... which could render the stone to liquid for the duration of the exposure to the sound (harmonic), lasers having been ruled out now, by Chris Dunn!
What ever way it is done, it means lots of mold making! Liquid stone, whether by chemical adjustment or harmonic adjustment needs a form to flow into. Unless .. they had harmonic laser cutters? .. Not likely!
Browns Gas is posited for the devices in the hands of the fellows at the Gate of the Sun area in S. America.
... We will know someday ... someday!
Beware the Adze!
Beware the land it came from.
... ... ...
That chisel of metal ~bi3 n pt~
With which he opened the mouths of the gods.