Hohokam Pima National Monument c/o Casa Grande Ruins National Monument. P.O. Box 518 Coolidge, AZ 85228 602-723-3172 Preserved here are the archeological remains of the Hohokam culture. Hohokam is a Pima Indian word meaning "those who have gone." NOT OPEN TO THE PUBLIC. Authorized Oct. 21,1972. Acreage- 1,690, all nonfederal.