Abstract: "Between January 31-March 9, 2001, the Center for Big Bend Studies of Sul Ross University (SRSU) conducted an archeological data recovery program for the Texas Department of Transportation at the Arroyo de la Presa site (41PS800) in southern Presidio County, Texas. The site, situated between the Rio Grande and Farm-to-Market Road 170 within the La Junta archeological district, is an open campsite containing stratified cultural deposits. Intact and partially intact prehistoric features and material culture primarily dating to the Late Prehistoric and Protohistoric periods were uncovered, providing important information on archeological manifestations in the area during these times. Materials recovered during the excavation are curated at the Museum of the Big Bend of SRSU."--page iii