As an aside, for those interested : this sort of "paleo-contact" ideas were proposed by Erich von Däniken. Aztec lines are space-ports, the flaming angel from the bible is a landing space craft, etc.

Someone even made a sci-fi cartoon about it, that 8-year-old me enjoyed =) It can't be that hard to find a PDF somewhere.

https://wearethemutants.com/2020/04/30/ancient-astronaut-com...