The area of Giant City State Park is 16.187 square kilometers.
The area of Traverse City State Park is 190,202.25185280002 square meters.
The area of Gay City State Park is 6,349,517.7267456 square meters.
The area of Sleeping Giant Provincial Park is 243.91 square kilometers.
Kankakee River State Park (look for the Rock Creek area for the canyon, forested areas are south of the river and near the Potowatomi Campgrounds). Matthiessen State Park - pretty much the whole park is a forested canyon. Starved Rock State Park - lots of forest, NUMEROUS canyons. Apple River Canyon State Park Giant City State Park - South of Carbondale off State Highway 51 and west of Makanda. Beautiful bluffs, forests, and it is near the Illinois wine country in the Cobden and Anna area.
The area of State Forest State Park is 286.671 square kilometers.
The area of Eastside City Park is 27,316.2808512 square meters.
The area of Maybury State Park is 3,820,232.4627456004 square meters.
The area of Torreya State Park is 48.562 square kilometers.
The area of Newaygo State Park is 1,040,042.1005568 square meters.
The area of Straits State Park is 732,481.0124544001 square meters.
The area of Cheaha State Park is 11.327 square kilometers.
The area of Stagecoach State Park is 6,640,891.389158401 square meters.