Archaeologists James Keyser and Michael Klassen show us the origins, diversity, and beauty of Plains rock art. The seemingly endless variety of images include humans, animals, weapons, masks, mazes, handprints, finger lines, geometric and abstract forms, tally marks, hoofprints, and the wavy lines and starbursts that humans universally associate with trancelike states. Plains Indian Rock Art is the ultimate guide to the art form. It covers the natural and archaeological history of the northwestern Plains; explains rock art forms, techniques, styles, terminology, and dating; and offers interpretations of images and compositions.