This is a well-known site and has been described in several books dealing with rock art, and driving directions can be found on several websites. This is not a large site, but it has some interesting panels. It also has some very obvious current rock art. I say current, because it was dated 2002.
I don’t condone the damage this person did, but since it’s done and that can’t be changed, it can be used as a learning tool. He (I’m assuming it was a guy) dated some of his work across the road from what he did in the middle of the main rock art site. I am also assuming that the California site steward that monitors this site recorded the damage sometime after September of 2002. Fast-forwarding to 2015 when I visited the site, I found very little if any repatination of the glyphs he supposedly created in 2002. If nothing else it could be a good long-term experiment.