petroglyphs

That section of the paper is simply a review of historical work on petroglyphs and insinuates nothing at all.

Anthony Peratt's[2] research on the recording of prehistoric auroral events, also in the form of petroglyphs[3].

There are petroglyphs depicting six-fingered hands in Chaco Canyon and, judging from an internet search, people can have six fingers.

But let me tell you this: even as a non-expert, comparing the pictures of the claimed phenomenon with various pictures of petroglyphs it's pretty clear that the correlation is extremely loose.

The article mentions that the event was possibly recorded in the form of petroglyphs[1].

With the highest concentration of rock art in the world, rediscover the petroglyphs (rock art) created by the Yaburrara (Northern Ngarluma) people.

Finally, a solid theory for what those giant petroglyphs were for!

I am not sure how the evidence has held-up to further scrutiny (there are issues surrounding dating of the petroglyphs found), but this article [2] has some discussion and nice pictures of the caves and petroglyphs.

It's not new or surprising that there are cave drawings and petroglyphs that are much older than the oldest writing, nor that such art is symbolic in some sense.

There's also petroglyphs, ceramics, and paints.

There's not an attempt to demonstrate a common source, there's not an attempt to analyze a complete context of petroglyphs (as opposed to individual ones) to demonstrate a coherent, single interpretation of a single event.

For my two cents, I think these are related to polynesian petroglyphs (see also the Waianae petroglyphs on Oahu) but employed in a new manner, one that the rapanui were exposed to either with mesoamerican admixture or with the arrival of the Spanish.

Nope, it's just "some of these common petroglyphs look kind of like aurora features."

“Hawaiian petroglyphs dating back at least a half-millennium” Which means 500 years ago.

The "double-dot" squatter petroglyphs are rarer, as that paper points out.

A fascinating example is the "Sun Dagger" at Fajada Butte in Chaco Canyon, where they used sunlight and shadow patterns on petroglyphs to mark important times of the year.

Petroglyphs are not a form of writing, and the Kush tablet along with a few others are considered to be precursors of the proto-writing – at best.