Claim: Pueblo del Arroyo has two hundred houses and was built at the edge of a canyon.
Evidence: Pueblo del Arroyo is an Ancestral Puebloan great house and archaeological site located in Chaco Culture National Historical Park, in New Mexico, United States. With three hundred rooms, it is the fourth largest great house in Chaco Canyon. A great house is a large, multi-storied Ancestral Puebloan structure; they were built between 850 and 1150.