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Giant prehistoric rock engravings could be territorial markers

Giant rock engravings along the Upper and Middle Orinoco River in South America could be territorial markers according to a new study.

Archaeologists have mapped 14 sites, with the largest engraving measuring 40 metres in length. “These monumental sites are truly big, which we believe were meant to be seen from some distance away”, says lead author of the research and Senior Lecturer in Archaeological Environmental Modelling at Bournemouth University, Dr Philip Riris.

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In order to determine the purpose of these engravings, Dr Riris and a team of researchers from Bournemouth University (UK), University College London (UK) and Universidad de Los Andes (Colombia) mapped the sites using drone photography.

Similar motifs used on pottery found in the area indicate that they were created at least 2000 years ago, and possibly much earlier. Many of the largest engravings are of snakes, believed to be boa constrictors or anacondas, which play an important role in the myths and beliefs of the local Indigenous population.

“We know that anacondas and boas are associated with not just the creator deity of some of the Indigenous groups in the region, but that they are also seen as lethal beings that can kill people and large animals,” says Dr Riris. “We believe the engravings could have been used by prehistoric groups as a way to mark territory, letting people know that this is where they live and that appropriate behaviour is expected”.

Dr José Oliver, Reader in Latin American Archaeology at UCL Institute of Archaeology, added: “the engravings are mainly concentrated along a stretch of the Orinoco River called the Atures Rapids, which would have been an important prehistoric trade and travel route. This means it would have been a key point of contact, and so making your mark could have been all the more important – marking out your local identity and letting visitors know that you are here.”

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The engravings would therefore have been intended to communicate with a wide range of people from diverse cultural backgrounds.

“Snakes are generally interpreted as quite threatening, so where the rock art is located could be a signal that these are places where you need to mind your manners”, states Dr Riris.

The research team conclude that it is vital that these monumental rock art sites are protected to ensure their preservation and continued study, with the Indigenous peoples of the Orinoco region central to this process.

“We’ve registered these sites with the Colombian and Venezuelan national heritage bodies as a matter of course, but some of the communities around it feel a very strong connection to the rock art”, says Dr Natalia Lozada Mendieta from Universidad de Los Andes. “Moving forward, we believe they are likely to be the best custodians.”

Header Image Credit : Antiquity

Sources : Antiquity | Monumental snake engravings of the Orinoco River – Philip Riris, José Ramón Oliver & Natalia Lozada Mendieta. https://doi.org/10.15184/aqy.2024.55

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Mark Milligan
Mark Milligan
Mark Milligan is multi-award-winning journalist and the Managing Editor at HeritageDaily. His background is in archaeology and computer science, having written over 7,500 articles across several online publications. Mark is a member of the Association of British Science Writers (ABSW), the World Federation of Science Journalists, and in 2023 was the recipient of the British Citizen Award for Education, the BCA Medal of Honour, and the UK Prime Minister's Points of Light Award.
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