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Ancient DNA reveals diverse community in Inca Empire

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A recent study published in Science Advances, has used ancient DNA to uncover the origins of workers who were buried more than 500 years ago within the Inca Empire, specifically at the site of Machu Picchu.

Led by Jason Nesbitt, an associate professor of archaeology at Tulane University School of Liberal Arts, the researchers conducted genetic testing on individuals interred at Machu Picchu to gain deeper insights into the lives and identities of its inhabitants.

Machu Picchu, a UNESCO World Heritage Site in the Cusco region of Peru once served as a royal estate for the Inca Empire. Machu Picchu also hosted elite members of Inca society and their attendants and workers, many of whom resided within the estate throughout the year.

Contrary to assumptions, this study, bolstered by DNA evidence, has finally confirmed the diverse backgrounds of these residents. As Nesbitt puts it, the findings provide crucial insights into the lives of the “retainer population” and are a window into the world of lower-status individuals rather than just focusing on elites and royalty.

The DNA analysis conducted in this study operates similarly to contemporary genetic ancestry kits. By comparing the DNA of 34 individuals buried at Machu Picchu with that of people from various regions within the Inca Empire and some modern genomes from South America, the researchers aimed to determine the level of genetic relatedness among them.

The results of the DNA analysis unveiled that these individuals hailed from different parts of the Inca Empire, with some originating from as far as Amazonia. Interestingly, there was minimal shared DNA among them, suggesting that they were brought to Machu Picchu individually, rather than being part of familial or community groups. This finding provides valuable insights into the diverse origins of the people who once inhabited this extraordinary site.

According to Nesbitt: “Now, of course, genetics doesn’t translate into ethnicity or anything like that,” said Nesbitt of the results, “but that shows that they have distinct origins within different parts of the Inca Empire. The study does really reinforce a lot of other types of research that have been done at Machu Picchu and other Inca sites.”

The DNA analysis supports historical documentation and archaeological studies of the artifacts found associated with the burials.

This study is part of a larger movement in archaeology to combine traditional archaeological techniques with new technologies and scientific analyses. This combination of fields leads to a more complete understanding of the discoveries made.

Tulane University

https://doi.org/10.1126/sciadv.adg3377

Header Image Credit : Shutterstock

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Archaeologists link biblical event to findings in the City of David

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Excavations led by the Israel Antiquities Authority, working in collaboration with Tel Aviv University and the Weizmann Institute of Science, have linked an event mentioned in the Bible to archaeological findings from the City of David.

The results of the excavation, published in the journal PNAS, challenges the accepted perceptions of the development of Jerusalem during the rule of the kings of Judah. In particular, the scope of Jerusalem during the reigns of David and Solomon and the period that followed.

The researchers have accurately dated several structures, including the city walls and royal construction projects, which are linked to Jerusalem’s growth to the west during the period of King Hezekiah around 2,700-years-ago.

The previous assumption was that the city expanded due to the arrival of refugees due to the Assyrian exile, however, the new findings now indicate that the city spread towards Mount Zion in the 9th century BC during the reign of King Jehoash, 100 years before the Assyrian exile period.

Prof. Yuval Gadot from the Department of Archeology at Tel Aviv University, said: “In light of this, the new research teaches us that the expansion of Jerusalem is a result of internal-Judean demographic growth and the establishment of political and economic systems.”

Excavations have also revealed that the wall of Jerusalem on the eastern slopes of the city of David is older than previously thought. It was thought that the wall in this area was built by Hezekiah, King of Judah, however, findings now indicate that it dates from the reign of King Uzziah.

King Uzziah is described in a passage in the bible that reads: “’And Uzziah built towers in Jerusalem… and strengthened them” (2 Chronicles 26:9).

According to Dr. Uziel: “Until now, many researchers have assumed that the wall was built by Hezekiah during his rebellion against Sennacherib (King of Assyria), in order to defend Jerusalem during the Assyrian siege. It is now apparent that the wall in the easter part of the City of David, was built earlier and as part of the construction of the city during the reign of King Uzziah.”

Header Image Credit : Leonardo Gurvitz, City of David Archives

Sources : IAA

This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily

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Ancient Pueblo used conch-shell trumpets for communication

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A new study, published in the journal Antiquity, suggests that the ancient Pueblo culture used conch-shell trumpets for communication.

The focus of the study is the site of the Chaco Canyon in north-west New Mexico. Located in Chaco Culture National Historic Park, Chaco Canyon contains numerous small dwellings and multi-story buildings known as great houses.

Based on the density of structures, archaeologists speculate that the site was once a bustling metropolis, inhabited by as many as 2,300 people during its height from AD 1050 to 1130.

Conch-shell trumpets have been found in burial contexts at Chaco Canyon, which today are used in contemporary Pueblo ritual practices.

Using a Soundshed Analysis model, archaeologists have digitally modelled the sound of a conch-shell trumpet being sounded at a great house in relation to other features in the landscape. Soundshed Analysis calculates the distance a sound can travel from a point, taking into account both the type of sound and environmental conditions such as elevation and ambient noise.

“Chaco Canyon is surrounded by over one hundred understudied great house communities”, says lead author Professor Ruth Van Dyke from Binghamton University. “We sought to determine if extra-canyon great house communities demonstrated relationships similar to Chaco Canyon between landscape, community layout, and sound.”

In this case, the team modelled the sound of a conch from great houses at five Chacoan communities to determine whether it would reach all habitation sites within the community.

They found that if somebody blew a conch-shell trumpet from the great house at the centre of all five Chacoan communities, the sound would have reached almost all of the surrounding settlements.

This suggests that ancient Puebloans may have managed their land-use and community structures around the sound of trumpets. The sound was potentially used to signal communal activities, such as religious ceremonies.

“This is not unlike the idea of a medieval church bell calling a community to mass”, states Professor Van Dyke.

It also indicates how Chacoan heritage sites should be managed going forward.

“Soundscapes were meaningful dimensions of past experiences, landscapes, and environments and are important facets of social interaction in the ancient world,” observes Professor Van Dyke. “Management of archaeological and heritage sites should incorporate consideration of the auditory environment.”

Header Image Credit : Shutterstock

Sources : Antiquity | Seashells and sound waves: modelling soundscapes in Chacoan great-house communities – Ruth M. Van Dyke, Kristy E. Primeau, Kellam Throgmorton & David E. Witt. https://doi.org/10.15184/aqy.2024.54

This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily

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