Tuesday, August 22, 2023

Ancient DNA Sheds Light on Machu Picchu’s Past

 From SciTechDaily:

Who lived at Machu Picchu at its height? New research, recently published in the journal Science Advances, leverages ancient DNA to unveil the origins of workers buried over half a millennium ago within the lost Inca Empire for the first time. A team of researchers, including Jason Nesbitt, an associate professor of archaeology at Tulane University’s School of Liberal Arts, conducted genetic examinations on bodies buried at Machu Picchu. Their objective was to gather more information about the people who lived and worked there.

Machu Picchu is a UNESCO World Heritage Site located in the Cusco region of Peru. It is one of the most well-known archaeological sites in the world and attracts hundreds of thousands of visitors every year. It was once part of a royal estate of the Inca Empire.

Like other royal estates, Machu Picchu was home not only to royalty and other elite members of Inca society, but also to attendants and workers, many of whom lived in the estate year-round. These residents did not necessarily come from the local area, though it is only in this study that researchers have been able to confirm, with DNA evidence, the diversity of their backgrounds. “It’s telling us, not about elites and royalty, but lower status people,” Nesbitt said. “These were burials of the retainer population.”

This DNA analysis works in much the same way that modern genetic ancestry kits work. The researchers compared the DNA of 34 individuals buried at Machu Picchu to that of individuals from other places around the Inca Empire as well as some modern genomes from South America to see how closely related they might be. (Read more.)

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