[Natufian]

Since we don’t know what aliens or alien spacecraft look like, how do we know what these paintings represent?

[Yollopoliuhqui]

Ancient people witnessed plasma discharges in the sky visible all over the world during a period of solar instability, sort of an aurora borealis on steroids. The image of the "squatter man" and its variations is found in petroglyphs all over the world.

http://tinyurl.com/lukekan