This is Canyon De Chelly, pronounced, D'shay, located on the Navajo Indian reservation in Arizona. The houses you see built into the canyon are actually Puebloan ruins and not Navajo. They lived in the canyon several centuries prior to the arrival of the Navajo. We hiked down to the "White house", which is the only trail you can hike without a Navajo guide. Navajo people still live in the canyon and don't want to be disturbed by all the tourists. There are wild horses that still roam around the area. If you take their picture or pictures of their homes or animals, you have to pay them a fee.