These lava flows were once a hunting and gathering area for prehistoric Native Americans, who left a chronicle of their beliefs etched on the dark basalt boulders. Some 25,000 petroglyphs provide a nice outdoor adventure after a morning in a museum. You'll want to stop at the visitor center to get a map and check out the interactive computer. From there, you can drive north to the Boca Negra area, where you'll have a choice of three trails. Take the Mesa Point Trail (30 min.) that climbs quickly up the side of a hill, offering many petroglyph sightings as well as an outstanding view of the Sandia Mountains. If you're traveling with your dog, you can bring her along on the Rinconada Trail. Hikers can have fun searching the rocks for more petroglyphs; there are many yet to be found. This trail (a few miles south of the visitor center) runs for miles around a huge rincon (corner) at the base of the lava flow. Camping is not permitted in the park; it's strictly for day use, with picnic areas, drinking water, and restrooms provided.