Located in the Hedgepeth Hills in the northwest corner of the Valley of the Sun, the Deer Valley Petroglyph Preserve (formerly the Deer Valley Rock Art Center) preserves an amazing concentration of Native American petroglyphs, some of which date back 5,000 years. Although these petroglyphs may not at first seem as impressive as those at more famous sites, the sheer numbers make this a fascinating spot. The drawings, which range from simple spirals to much more complex renderings of herds of deer, are on volcanic boulders along a quarter-mile trail. An interpretive center provides background information on this site and on rock art in general.