The Jim Camp Wash Petroglyphs is a site in the Petrified Forest National Park near Holbrook, Arizona that we haven't visited yet. The site is located about a mile north of the Rainbow Forest Museum. We aren't sure what the access is but it looks like there is a road that leads within a few hundred yards of the petroglyphs. For turn-by-turn directions enter 'Rainbow Forest Museum' into your driving app and choose the location on the Petrified Forest Road. If you are coming from Holbrook it will probably route you along US-180 and you will enter the park from the south. The road, which might be gated, is about 500 feet past the museum. I'm sure they will be able to say whether the site is open or not.
Included with this post is the GPS file and map that we plan to use for our first visit. If you don't want to wait for us to get around to it feel free to try the GPS file and map for yourself. With no guarantee, of course, but they most often prove valuable for us.