Pictographs and petroglyphs of horses have been made since those animals were reintroduced to North America by the Spanish in the 1500s. After horses were in use by northern Plains Indians, they drew hundreds of scenes that include horses and their riders, often in war-related activities. Archaeologists have studied enough of these scenes to be able to recognize Crow horses, Blackfoot horses, Comanche horses, and those of other peoples. Depictions of horses also are found on rocks on the southern Plains and across the Colorado Plateau, but not in large numbers. There are places, however, where they are common. For example, there are hundreds of horse depictions at sites in Canyon del Muerto, Arizona. Archaeological research on one spectacular panel there by Robert Mark, Stephen Jett, and Sacred Sites Research, combined with information gleaned from studying other rock art horses in the Intermountain West, is the topic of this presentation by archaeologist Lawrence (Larry) Loendorf, PhD.