Some 5,000 year old petroglyphs.
I found them by chance but while the site is not unknown there's very little information about it due to it being on public land and not protected.
I did do some research and found that this was what was called a "dancing place" used for middle and late-archaic rituals. At the time there was a large geyser here and boulders on the site were arranged to predict the summer and winter solstices, the spring and autumn equinox and in a later times dates to plant and harvest
On the right of the boulder you can see what I believe to be a bear's head
You can't make it out from the picture but it has individual quartz teeth
There's also some pre-historic fish weirs and other stonework in the local river that were part of a native fish camp.
They still make for good fish holding structure
There's a story about a battle that took place at this camp between rival Indian tribes that supposedly had to do with a disagreement about how to prepare eel, but that's a story for another time