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This view overlooks the visitor's center and encompasses a great swath of the marsh to the northwest. The marsh is a silted-up ancient lake. It is the largest fresh-water marsh in the United States. Horicon Marsh is near the city of Horicon in Fon du Lac and Dodge counties in Wisconsin (USA) For more information, see: https://en.wikipedia.org/wiki/Horicon_Marsh
This silted-up ancient lake is the largest fresh-water marsh in the United States. Horicon Marsh is near the city of Horicon in Fon du Lac and Dodge counties in Wisconsin (USA) For more information, see: https://en.wikipedia.org/wiki/Horicon_Marsh
