Immaculately-cut stone walls ingeniously incline inward to protect from quakes and were lined both inside and out with banded sheets of solid gold. This, plus a great field of maize made with ...

Five hundred years after the Spanish conquest, the original inhabitants of Tawantinsuyu are still alive in the form of ...

The Chinkana tunnel network consists of enormous trenches lined with stone walls, ceilings, and carved stone beams. "The cavity would be from one meter to 2.60 meters wide by 1.60 meters high.