Spruce_Lake_Bog
Spruce Lake Bog
State-protected natural area in Fond du Lac County, Wisconsin
Spruce Lake Bog is a 140-acre (57 ha) bog in Fond du Lac County, Wisconsin.[1] It is located within Kettle Moraine State Forest.[2] The bog was designated a Wisconsin State Natural Area in 1968 and a National Natural Landmark in 1973.