Finished reading the first paper. A couple more quotes from it:

"Data shows petroglyphs have a preferred orientation on a worldwide basis and on morphology type, indicating that they are reproductions of plasma phenomenon in space."

"The accuracy of these MHD instabilities suggests that an appreciative amount of time of a particular morphology was visible to the petroglyph carvers."


So were the ancients recording a powerful solar event? Looks like it. I recall reading in there somewhere about how wings were used to show intense energy or something like that. An anomaly anyways..Is this where the representation of the "winged" disc comes from? A huge CME outburst from the sun.