Marsh Wetlands State Nature Preserve State Park

(Ohio)

The Mantua Bog State Nature Preserve is a 104.8-acre (42.4 ha) protected wetland in Mantua Township, Portage County in the U.S. state of Ohio. It was designated a National Natural Landmark in 1976 and a state nature preserve in 1990. The national landmark designation encompasses 285 acres (115 ha) which includes Marsh Wetlands State Nature Preserve, in addition to Mantua Bog State Nature Preserve. (Ref: https://en.wikipedia.org/wiki/Mantua_Bog_State_Nature_Preserve)