Prehistoric Rock Art Lies Hidden Throughout the Grand Canyon

Rock art created by prehistoric Native American cultures exists all across the U.S., being most prevalent in the Southwest. Tracking down rock art sites in the Grand Canyon, however, can be a real challenge. Rock art created by prehistoric Native American cultures exists all across the U.S., being most prevalent in the Southwest. Tracking down rock art sites in the Grand Canyon, however, can be a real challenge. Planet Earth All Articles | Discover Magazine