Just goes to show, ancient man was not so primitive. And that the sky was full of auroral activity back then, given that right now our poles have the highest cosmic ray and solar wind fluxes and we can only generally see the aurora around the magnetic poles. How far inland have these petroglyphs been found? Petroglyphs in Australia with aurora and plasma physics carved into them is pretty strange, seeing as how only the very bottom part of Australia can even see aurora anymore. Nature's giant plasma screen.