Thanks, Terry. My first trip to Arizona, early 80's, I took over 400 photos of petroglyphs. Driving through the Petrified Forest, just try and find a rock that doesn't have carvings on it! Always had a keen interest in them. Pick up a point, and it's not necessarily going to be a window into the native's mind. But petroglyphs are glimpses into many aspects of their beliefs, etc., if we can but interpret them. And so many of the design elements are the same throughout the Americas.
Thanks for sharing those photos.