National Wildlife Refuges - Region 3 Region 3 includes Illinois, Michigan, Minnesota, Missouri, Ohio and Wisconsin refuges. This unglaciated landscape contains steep sandstone outcroppings, southern hardwood forests laced with numerous creeks, bordered by two large man made reservoirs. Plant species range from orchids to prickly-pear cactus, and over 115 different types of trees. The Seney Wilderness was established in 1970 and contains 25,150 acres. The wilderness is located in what is known as the Great Manistique Swamp.
Habitats range from open water, to hardwoods, spruce and pine forests.
The majority of the wilderness is characterized by string bog topography, with moist organic soils, and sand ridge islands. The Huron Islands Wilderness contain 147 acres on 8 remote islands in Lake Superior. These islands are composed of pink and gray granite covered with trees, shrubs and herbaceous plants, and exposed rock which is barren or covered with lichens and mosses. The rocks rise nearly 200 feet above the lake with steep cliffs on the south and rounded, glacial and wave worn rock surfaces on the ends and north sides. An historic lighthouse and associated support buildings are located on one of the islands, owned by the Coast Guard as an inholding in the wilderness area.