Stones used to hold down lodge covers survive as circular "tipi rings" over much of the Great Plains and are often used by archaeologists as evidence of both short- and long-term camp locations. While studies of stone ring sites are commonplace in the Northern Plains and Rocky Mountains, less work has been done to identify and test similar sites in the Southern Plains, particularly in Oklahoma. Dr. Brandi Bethke's presentation will discuss how the results of archaeological surveys and test excavations conducted at four archaeological sites in Cimarron County, Oklahoma, are helping researchers to better understand the temporal placement, cultural affiliation, subsistence adaptation, migration, and trade alliances of Late Precontact and Early Contact period groups in the Black Mesa region.