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Continue to ChatSerpent Mound State Memorial Map - Adams County, OH https://www.yellowmaps.com/usgs/topo.cfm?map=oh-1075157-serpent-mound-state-memorial
Serpent Mound State Memorial Map - Adams County, OH https://www.yellowmaps.com/usgs/topo.cfm?map=oh-1075157-serpent-mound-state-memorial