I am shown overlooking the ruins of Pueblo Bonito, the largest and most famous of the Ancestral Puebloan great houses at Chaco Culture National Historical Park, NM. Between approximately the 9th and 13th centuries CE, Chaco Canyon was a major regional center for native cultures living in the modern-day Four Corners area of the American Southwest. It was designated as a World Heritage property by UNESCO in 1987. Click the above image to enlarge, or click to view my high-resolution photo gallery.