I don’t see any animals that are definitely camels—I’d say they are giraffes.
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Seriously dout it. Where are the brown patches? I’m not familiar with any history of humans domesticating and riding giraffes. Would be kind of hard to do with their very long legs and sloped backs.
domesticating and riding giraffes.
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But they likely hunted them.
Otherwise, they are recording their existence. Probably scavenged some meat in competition with the other wildlife, as well.
As to the patches. Nothing else looks like a giraffe. So the silhouette is an adequate identifier.
There are varieties of camelids, but the longest necked ones in South America are still way shorter/differently-shaped than a giraffe.