National Wilderness Areas in Illinois

Granite outcrops and thick forest at Garden of the Gods Wilderness
Garden of the Gods Wilderness in Shawnee National Forest
Hutchins Creek, between Bay Creek and Clear Springs Wilderness

National Wilderness Areas

Except for Crab Orchard Wilderness, all the wilderness areas in Illinois are on Shawnee National Forest in the southern part of the state.
 
A prescribed burn near Crab Orchard Wilderness
A prescribed burn near Crab Orchard Wilderness

Photo of Garden of the Gods Wilderness courtesy of Daniel Schwen, CCA-by-SA 2.5 License
Photo of Hutchins Creek courtesy of
Photo of Crab Orchard Wilderness courtesy of US Fish & Wildlife Service