This was a difficult shot. The petroglyph was backlit in the Painted Desert Inn at the Petrified Forest National Park. The rock had been "collected" back in 1934 on Blue Mesa, in the early days of the Park before removing such artifacts became a Federal Crime. The image is very faint and standing in front of the rock, I could not see the image very well at all. With a little photo enhancement, you can see one of the most interesting rock pictures (petroglyphs) in Northern Arizona, even if it is in captivity rather than in the wild. This is one of the most famous images of the Southwest.