Pueblo Bonito, the largest archeological site at Chaco Culture National Historical Park, is seen in northwestern New Mexico, on Aug. 28, 2021. As the Chacoans flourished between 850 A.D. and 1150 A.D.

A groundbreaking study led by Texas's Southern Methodist University (SMU) has confirmed what the people of Picuris Pueblo have long known: they are direct descendants of the ancient Chacoan ...