If you like magazines like National Geographic and Smithsonian you may get the impression that many of the archaeology sites are not in the U.S. but that is not the case. In Utah you can a host of great places that have Native American Writings and Dinosaur Fossils.
Particularly, I like the stories that the Indians of the area used. Apparently, most of the tribes had a similar type language. They discussed travel, food, death, help and more. It was a time where simple things could mean life and death.