The figures look African to me . .
That little guy in front doesn’t look so African ...
Ancient story ~ but here the illegal aliens painted some paintings and that's the way it is.
I didn't see a horse in the inset shown above but Columbus, et al, always took horses and pigs with them wherever they went. 20 years can go by in a whiz and the place is full of them. Next year you'd have hots up to your armpits too! The Spanish and other explorers also distributed goats because they can live where even rats starve to death.
That was my first thought.