Rock art along the Orinoco river in South America is made up of some of the largest etchings we know of and could date back 2000 years
Prehistoric engravings of giant snakes along South America’s Orinoco river are among the largest examples of rock art we know of anywhere in the world, with some stretching for more than 40 metres.
Since 2015, Oliver and his colleagues have taken several trips to areas along the Colombian and Venezuelan margins of the river to build a better picture of its rock engravings.Of the 157 rock art sites that the team has managed to visit, 13 were made up of engravings that were at least 4 metres tall. “Anything that size is monumental in our view,” says Riris. “That means they’re often visible from quite far away, maybe 500 metres to a kilometre.
The prominence of the rock art along the river suggests that the ancient carvings may have been a territorial marker to signal that a certain group lives there, but not necessarily a warning to stay away. “The engravings may not be exclusionary, but rather an inclusionary practice that was shared among the communities,” says Riris.
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