Petroglyph National Monument stretches 17 miles along Albuquerque, New Mexico 's West Mesa , a volcanic basalt escarpment that dominates the city's western horizon. Authorized June 27, 1990, the 7,236 acre monument is cooperatively managed by the National Park Service and the City of Albuquerque . The western boundary of the monument features a chain of dormant fissure volcanoes . Beginning in the northwest corner, Butte volcano is followed to its south by Bond, Vulcan, Black and JA volcanoes . Petroglyph National Monument protects a variety of cultural and natural resources including five volcanic cones , hundreds of archeological sites and an estimated 24,000 images carved by Ancestral Pueblo peoples and early Spanish settlers. Many of the images are recognizable as animals, people, brands and crosses; others are more complex. Their meaning was, possibly, underst...