The Papago Indian Reservation, touching the Mexican border in south-central Arizona, has been the scene of anthropological work by the Department of Anthropology of the University of Arizona and the Arizona State Museum during the past four years. One branch of this general study has been archaeological, consisting of reconnaissance and of excavation in what were considered to be key sites. Beyond Gila Pueblo's limited survey in Papagueria, next to nothing was known about it. The environment is harsh and arid, and scanty surface water limits agricultural possibilities. Yet more than 5000 Papago Indians somehow manage, as they have for centuries, to make a comfortable if simple living in the area. Certainly the life there today is nothing new and it is a fair conclusion that, although inhospitable, the area should furnish a fairly rich archaeological picture. As our work proceeded it became evident that there were ruins in abundance. With few exceptions, these were small and the occupation thinly spread. Occasionally, a large site with sizable trash mounds gave promise of stratigraphy.