Genealogy of Religion

A friend just visited Zion National Park in Utah and took some amazing photos of petroglyphs in the backcountry.  Given that these are carved into the rock, there really is no way to date them directly.  I am not sure of the occupational sequence for that area, but there seems to be no reason these could not be the product of cumulative efforts that began with Paleoindians and continued with the Anasazi and Paiute.  As you can see, several of the images are entoptic, and thus indicative of shamanic altered states of consciousness.