Too often a unit of the National Park System is overlooked because its name doesn't end in "National Park." Petroglyph National Monument is one such place.
Located in New Mexico not far from Albuquerque, the monument protects a variety of cultural and natural resources including extinct volcanoes, archaeological sites, and an estimated 20,000 carved images. A visit could include a hike to the top of some of the volcano remnants.
For a primer on the park, check out this four-minute video produced by the Albuquerque Convention and Visitors Bureau.