Thanks to Eric, I'm making a correction. this is a picture of the Aztec ruins near Aztec N.M. in the Four Corners area. It is misnamed, but at the time the belief was that the Aztecs migrated to Mexico from this area and that the Anasazi could have been their forebears. Linguistically the Ute tribe is closer to the Aztecs and they are not decedents of the Anasazi.
Mesa Verde in the North West part of the state, known as the Four Corners area (where N.M. Arizona, Utah and Colorado meet). Remains of early settlers known as Anasazi.