“…Moines (Winham and Ruple 1989); and the Phase II archaeological and geomorphological investigation for the Des Moines Greenbelt/Amphitheater project (Ross et al 1991). The latter is the closest of these previous investigations to the Botanical Center Phase III construction area and is located approximately 0.5 mi to the south-southwest on the east bank of the Des Moines River.…”