Nice photos:thumbsup: I have some we found in Arizona near the Petrified Forrest museum, they where literally hundreds on the rock outcrops near and ancient rock Indian settlement you can tour. We walked across the highway and "poked" around and the drawing where every where. If I can find some of the photos I will post them, they where on a hard drive that fried and I have been able to recover some of the stored photos.
There also are quit a few in the 4 corners region. Near where I hunt Elk, there are some that according to what I've been told where trail markers for traveling Ute indians. Sad thing is , some of the pictographs have been cut out and stolen, damaged by attempts to remove and what appeared to be Dumb ***** high schoolers doing graffiti.