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Historical Timeline Is Inaccurate: Advanced Radiocarbon Dating Reveals Machu Picchu Is Older Than Expected

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Machu Picchu is Several Decades Older Than Previously Thought

New Discovery Indicates Machu Picchu Could Be Decades Older Than We Realized

Accelerator mass spectrometry — an advanced form of radiocarbon dating — reveals that Machu Picchu was in use from about A.D. 1420 to A.D. 1530 making the site at least 20 years older than the accepted historical record suggests.

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