Post-contact rock art, also known as historic rock art, consists of petroglyph and pictograph images made after contact between Native American and Euro-American cultures—in the American Southwest this is after A.D. 1540 when the conquistador Coronado entered the region. The product of Native Americans, Spaniards, Mexicans, and Americans, it can be recognized by images that did not exist here prehistorically, such as horses, guns, wagons, trains, ships, buildings and western styles of dress. Compared to widespread prehistoric images, there is less post-contact rock art. It tends to be more secular and realistic in contrast to the supernatural character of much prehistoric rock art, and is more likely to tell a story or record an event. This tradition continues today—I have seen a petroglyph on the Navajo Reservation that depicts jets flying into the Twin Towers, recording the awful events of the 9/11 terrorist attacks. Consisting of 140 pages richly illustrated with more than 300 compelling photographs and drawings, this book appeals to not only rock art enthusiasts and archaeologists but also those interested in western history, cowboys, ranching and Hispanic culture, horses, trains, religious icons, contemporary art and graffiti.