National preserve, southwestern New Mexico, U.S. Located in the Gila National Forest near the headwaters of the Gila River , it contains groups of small but well-preserved Pueblo Indian dwellings in natural cavities of an overhanging cliff 150 ft (45 m) high.
The dwellings were inhabited с AD 100–1300. Established in 1907, the monument occupies 533 acres (216 hectares).