Radiocarbon testing
Machu Picchu may be decades older than previously thought
Radiocarbon dating of human bones and teeth in Peruvian ruins indicate that the Inca first lived at the citadel around 1420, not after 1440
Radiocarbon dating of human bones and teeth in Peruvian ruins indicate that the Inca first lived at the citadel around 1420, not after 1440