The Mero site on Marshall’s Point in Wisconsin’s Door Peninsula preserves a stratified record of repeated human occupation from about 500 B.C. to A.D. 1400. Its layers document Middle Woodland North Bay I and II deposits, later Late Woodland remains, and a substantial Upper Mississippian occupation. More than 11,800 pottery sherds from at least 501 vessels make pottery the clearest evidence of cultural change, including a transition from North Bay to Heins Creek and then to a distinct Oneota presence after about A.D. 1000. Tools, animal remains, and the absence of village features suggest the site may have served as a temporary specialized camp, possibly for fishing, while also preserving evidence of ceremonial practices.