Question: Along which creek is the prehistoric effigy mound that William F Romain led a investigative team of archaeologists into in 2011 located?
Sentence (from "William F Romain"): This was the first major investigation of the effigy in more than one hundred years and included Geoprobe coring, hand coring, limited excavation, ground-penetrating radar, and electric resistivity analysis.
Relevant evidence: No