Navajo National Monument, established in 1909, preserves three intact cliff dwellings of the Ancestral Puebloan people, as well as numerous smaller sites from a range of cultural and chronological contexts.
The American Southwest Virtual Museum hosts an artifact exhibit, photographs of major archaeological sites, and images related to Navajo life in Navajo National Monument.
Additional information can be found at the official National Park Service website for Navajo National Monument.