FILE PHOTO: Tourists view Pueblo Bonito, one of a series of Puebloan structures in Chaco Culture National Historical Park believed to have been used as ceremonial as well as administrative and trading centers and built over multiple decades between the 9th and 12 centuries, in Chaco Canyon, New Mexico, U.S. October 21, 2021. Picture taken October 21, 2021. REUTERS/Dan Grebler