Canyon De Chelly National Monument (d'SHAY) is on the Navaho reservation in northeast Arizona. It is the home of Navahos today, and has been for them and other societies before them, continuously, for almost 5,000 years. There are many ruins of prehistoric dwellings in the canyon, some of them quite well-preserved.
There are also a number of petroglyphs and pictographs from Anasazi and other cultures.
There is a famous geologic feature in the canyon, called Spider Rock