IANP101D Effigy Mounds National Monument, IA
Row of conical mounds at edge of a summer forest
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| IANP102D Effigy Mounds National Monument, IA
Conical mounds at edge of a summer forest
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| IANP103D Effigy Mounds National Monument, IA
Row of conical mounds at edge of a summer forest
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| IARU103A Madison County, IA: Hogback covered bridge (1884) on North River at sunset
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