Peruvian Dig Revealed Ancient Sican “Cemetary City.”

Archaeologists in northern Peru discovered a 1,000 year-old "cemetary city", thought to be related to the Sican culture [wiki] which predates the Incan.

Of particular interest is the discovery of "tumis" or ceremonial knives shown to the left. You probably don’t want to know what they’re cutting with it …

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