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Continue to ChatMap Center of Herreid Map - SD, United States https://www.yellowmaps.com/usgs/places.cfm?latdec=45.8125&londec=-100.0625&fname=Map%20Center%20of%20Herreid&fclass=Topo%20Map&st=SD&county=United%20States&el=---&quad=Herreid&quadid=45100g1