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archeologist have fully map a serial of ancient rock-and-roll prowess in Venezuela and Colombia , including the reality ’s largest monumental engraving , using picture taking and lagger footage .

The masterpieces , which feature both human and brute motif , are conspicuously locate along the Upper and Middle Orinoco River , which snakes through this part of South America . Researchers suppose the placement was intentional and was meant to be get word from a space , since it was along the track of an of import trade and travel path known as Atures Rapids , agree to a study published Tuesday ( June 4 ) in the journalAntiquity .

A person stands measures rock art depicting a snake.

The most common motifs found in the region include depictions of snakes.

" One rendition is that there was some aspect of territoriality at play , " lead authorPhilip Riris , a fourth-year reader in archaeological and paleoenvironmental modeling at Bournemouth University in England , told Live Science . " It was a way of distinguish their territorial dominion and say that this is our sphere . "

researcher are unsure of who created the massive engravings , the large of which unfold 138 feet ( 42 meters ) long . However , they do know that some of the subject matter , including a focus on Snake River like boa constrictors andanacondas , " wreak an important role in the myths and belief of the local autochthonic population , " according to a statement from Antiquity .

" Anacondas and boas were associate with the creator immortal of some of the Indigenous chemical group last in the region , " Riris said . " Snakes also are known for being lethal ; perhaps this was a manner for them to warn outsiders that they were entering the domain of the serpent . "

Rock art engravings and illustrated drawings of each figure.

A view of the monumental snake (figure #11) and other motifs found on one of the rock outcrops.

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One large ophidian motif , in particular , caught the attending of researchers as it resemble a similar drawing scrawled onto a piece of clayware unearthed in the area during a former excavation . It includes horn , a whorled tail and a " well - defined zigzag " similar to the Cerro Palomazón snake describe in the rock graphics , according to the study .

" A small urn recover from a cave on one of the hillsides is decorated with a similar snake , " Riris say . " It ’s possible that someone had copied what they were seeing on one of the walls . But my gut tactile sensation is that whoever made [ the urn ] was a contemporary of whoever made the rock art . "

A series of images showing different rock art motifs.

A collection of motifs found at the sites, including engravings of centipedes and snakes.

If that ’s the case , based on the pottery , the stone art would be just about 2,000 years erstwhile , agree to the study .

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Although most of the sites were previously known by research worker , they did discover several new locations during the function project .

" No where else in the human beings do we consistently see rock artwork of this size , " Riris said . " Elsewhere you might see expectant , one - off examples of stone art , but here we ’ve found a concentration of sites that take place in regular intervals . "

a series of five ceramic figurines in different sizes

The research team recently register the sites with the Colombian and Venezuelan interior inheritance bodies and plans to work with local autochthonal groups to ascertain that the rock art is protect , peculiarly as the region becomes more open to tourism .

" It is gravely in motive of protection , " Riris said . " Our hope is that we can work together with local groups to protect and maintain the sites . We think that they would be best custodian for these sites . "

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