Canyon de Chelly National Monument was established
April 1,
1931, as a unit of the
National Park Service and is located in northeastern
Arizona within the boundaries of the
Navajo Nation. It preserves ruins of the early indigenous tribes that lived in the area, including the
Ancient Pueblo Peoples (also called Anasazi) and
Navajo. The monument covers 131 square miles (339 km2) and encompasses the floors and rims of the three major canyons: de Chelly, del Muerto, and Monument. These canyons were cut by streams with headwaters in the
Chuska mountains just to the east of the monument. (Wikipedia)