Can we also accept that the "those ignorant savages could never have accomplished this" subtext is ludicrous?
I don't know what you mean. Please rephrase.
There is very good documentary how Machu Picchu was made on youtube. It goes into extensive details about water drainage, securing terraces against land slides and so on.
And there are similar stone walls all over Greece.
Manpower and time, like anything else in the world.
Except it's not an undisputed fact.
so, how were those sites made? The article gives alot of examples, but none of those examples is a proven fact.
I doubt we could reproduce most of what ancient cultures did. Why did they build things the hardest way possible and where are the tools?