Petroglyph site

This was so cool! I stopped in Thermopolis, WY after my two nights of camping to soak in the hot springs and, more importantly, take a shower. When I was leaving I asked the the lady at the front desk if she knew a good place to have a picnic and let the dog run amuck. There was an off-duty forest ranger there. He told me about this petroglyph site (in the middle of nowhere) and told me, if I promised not to vandalize it, he would give me the gate keys to access it...it's not really open to the public. I know, I know, best not to take keys from strangers but check it out! There were hundreds of these drawings all along this cliff that faced a lazy creek. If I were an indian, I would have sat with my back against those warm cliffs, taken in the view, shot arrows at passing game and would have drawn on the walls to pass the time. :)