Heron Pond – Little Black Slough Nature Preserve is a parcel of protected wetland property located approximately 5 miles (8 km) southwest of Vienna in Johnson County, Illinois. It was designated a National Natural Landmark in 1972. As part of the Cache River basin, it is classified as a wetland of international importance under the Ramsar Convention.
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Heron Pond – Little Black Slough Nature Preserve
Hours
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Parking
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Pets Allowed
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Restrooms
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Wifi
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Wheelchair Accessible
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Credit Cards Accepted