Devil’s Icebox is a large cave connected to the much smaller Connor’s Cave. Connor’s Cave is the one my friend Lee and I actually went in to as you don’t need a boat to get in, barring somewhat common floods.
Both of these caves are in Rock Bridge Memorial State Park. I’m always surprised at how many people have never been to either the caves or the park, it’s just down Providence Road:
0615 Rock Bridge//Connor’s Cave, a set on Flickr.