Grand Canyon: 12,000 Years of Native American History
From the Late Pleistocene to the 21st century -- twelve millennia of uninterrupted occupation. Paleo-Indian hunters, Ancestral Puebloan builders, Havasupai and Hopi nations: the Grand Canyon is one of North America's richest prehistoric sites. And the great mystery -- why did the Puebloans abandon everything around 1300 CE? -- continues to divide archaeologists.
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