After dinner we went to find the rock art panel out the east entrance past the second tunnel. The rangers won’t tell you where the rock art is but we’d already learned the way there from some locals.
Heading east toward the east entrance you'll go through the big tunnel then the second smaller one. Not far beyond that you'll see the only pullout that is bordered by a wooden fence. It is the ONLY pullout with a wooden fence. Park there by the fence. Drop down into the wash and bear right through the beautiful masonry tunnel under the road. The rock art will be along the rock face that will be on your left after you go through the tunnel under the road. Look for foot trails to the left to the rock art.