Concentric circles and spirals are universal petroglyphs. I have seen them in rock art in Oregon, Arizona, Southeast Asia, Japanese museums and Chinese museums. You can go to publications showing concentric circles in some of the oldest rock art sites in India, Africa, Europe and South America. Are they just geometric designs and their makers were doodling or did they have some meaning. I’ve read a lot of guesses (the shaman’s entry point to the other world) but nothing convincing.