construction of Sacsayhuaman near Cuzco, Peru. These are not
surface cuts on a stone mountain. They are individual boulders,
many different origin, and weighing up to 300 tons, (one hundred
times as heavy as the surface blocks at the Great Pyramid in
Egypt), yet fitted precisely together. How was this accomplished?
The Pre-Inca builders of the great walls remain unknown.
in America Navigators of the Ancient World by Ivar
Zapp and George Ericson