Chaco Canyon, New Mexico - small, symmetrical doorways separate the abandoned rooms at Pueblo Bonito. Between AD 900 and 1150, Chaco Canyon was a major center of culture for the Ancient Pueblo Peoples of North America.
A large cottonwood tree, dormant in the winter cold, stands over a modern stucco building at the visitor's center at Aztec Ruins National Monument, New Mexico.
A centuries-old wooden post anchors an ancient stone wall excavated in Aztec Ruins National Monument, New Mexico. Native Americans brought multi-colored stones to the building site from miles around.
