Cave-In-Rock State Park 
1 New State Park Rd.
Cave-In-Rock, IL 62919
618-289-4325
https://www.dnr.illinois.gov/Parks/Pages/CaveInRock.aspx
State Park: Birding, Camp, Caving, Fish, Hike, Picnic, Walk, Water Sports
Few natural formations are as awe-inspiring or intriguing as a cave. The deep, dark recesses immediately conjure up images of adventure, mystery, terror, robbers and pirates.