Movies: Incan empire

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Through a mix of crime-lab science, archeology, and history, this NOVA/National Geographic special presents new evidence that is changing what we know about the final days of the once-mighty Inca Empire....

Deep in the Andean mountains lays a mysterious ruin named Machu Picchu. For 400 years it sat abandoned on its misty cliff, the quintessential lost city in the jungle. Rediscovered in 1911, it contained no written records or carvings, nothing that cou...