Know any caves in/around St. Louis?

[Chris]

Been to the show caves...Onandoga, Meramec, etc. But are there any caves in or within an hour or so drive of St. Louis that aren't commercial?

[speelunker]

Monroe County in Illinois has quite a few caves and would be within an hour of downtown STL. Illinois Caverns (managed by IDNR) is a non-commercial cave and worth visiting. It is a large cave, (i think the largest in the state) It is near the town of WaterlooI have been in it several times and it is def. worth the drive.