Yep. All I see are rocket ships, grays, and maybe some inappropriate depictions of probing.

There are some high up sacred places in south central Oregon that apparently were often visited by medicine men. Any rock with smooth surface has pictographs or petroglyphs. These weren't places where you would find camps or good hunting areas so you have to think they had to do with vision quests and the like.

Up on the Umpqua country near Diamond lake I discovered a cave with pictographs. Apparently the juice of the kalmiopsis plant root was used as the vegetable dye there. Discovered this by mistake as I tried to dig up some plants and stained my hands.

Times sure change.
Today they use rattle cans and paint on railroad rolling stock.

Tall man explaining that fur prices will again be low

The artist is explaining that Bigfoot is real and they shot him full of arrows and he still kicked their butts!