This grafitti covered rock, (Indian petroglyphs, Clarke's signature and even Gen Custer's signature a year before the Little Bighorn), attest to the vibrant/historic point on the Clarke Expedition route and later the Oregon Trail settlers!
There was some cult situated there when I passed through in the early '80's. I stopped (unwittingly) at their restaurant and had some of the best homemade apple pie ever. I still remember the rose relief in the crust, and the conversation with the poor beguiled waitress...