Sacsahuaman
"How were such titanic blocks of stone brought to the top of the
mountain from the quarries many miles away? How were they cut and fitted?
How were they raised and put in place? Now one knows, no one can even guess.
There are archaeologists, scientists, who would have us believe that the
dense, hard andesite rock was cut, surfaced and faced by means of stone
or bronze tools. Such an explanation is so utterly preposterous that it
is not even worthy of serious consideration. No one ever has found anywhere
any stone tool or implement that would cut or chip the andesite, and no
bronze ever made will make any impression upon it."
A. Hyatt & Ruth Verrill ----America's Ancient Civilizations