On the limestone walls of this park are pictographs drawn by ancient Native Americans 4,000 years ago. Symbols represent animals, Native Americans and supernatural shamans, although their meaning is unknown. Archaeologists believe the early residents of Seminole Canyon were hunter-gatherers, living on plants such as sotol, prickly pear and lechugilla. Ranger-led tours (Wed-Sun) take visitors to the Fate Bell Shelter, an overhang that displays the oldest rock art in North America.