Navajo National Monument, Arizona (1951)

Navajo National Monument is a National Monument located within the northwest portion of the Navajo Nation territory in northern Arizona, which was established to preserve three well-preserved cliff dwellings of the Ancestral Puebloan People: Keet Seel (Broken Pottery) (Kits'iil), Betatakin (Ledge House) (Bitát'ahkin), and Inscription House (Ts'ah Bii' Kin). The monument is high on the Shonto plateau, overlooking the Tsegi Canyon system, west of Kayenta, Arizona. It features a visitor center with a museum, two short self-guided mesa top trails, two small campgrounds, and a picnic area. Rangers guide visitors on free tours of the Keet Seel and Betatakin cliff dwellings. The Inscription House site, further west, is currently closed to public access.

The Sandal Trail is an accessible self-guided walk that provides views of the spectacular canyonlands and rugged topography near the visitor center. Interpretive signs provide information on local flora and other topics. The 1-mile (1.6 km) round-trip trail ends at an overlook of the Betatakin ruins across the 560-foot-deep (170 m) Betatakin Canyon. The National Monument was listed on the National Register of Historic Places on October 15, 1966.