The natural beauty that characterizes Illinois is more than skin deep, some of the state's most significant and scenic wonders lie far beneath the surface.

Illinois Caverns — a ‘hidden gem in southwest Illinois’ — reopens after being closed for more than a decade to protect the bat population About 150,000 years ago, the area that is now ...

Illinois Caverns State Natural Area | Monroe County, Illinois | 30 minutes This wild attraction doesn’t feature any tour guides or lighted pathways, which makes it one of the more precarious caving ...

About 1,000 Boy Scouts every year descend into the humid darkness of Illinois Caverns outside Waterloo to learn about the stalactites, sediments and salamanders that call it home.

You won’t believe the gems in Downstate, Illinois. Tour like local to craft beer trails, petting zoos, Heath candy bar, and Illinois Caverns to name a few!

Illinois owns only a handful of caves, but one of these — Illinois Caverns south of St. Louis — is a popular destination for school groups and cavers, alike.

SPRINGFIELD, Ill. (AP) — The Illinois Department of Natural Resources is closing state-owned caves to the public in response to the rapid spread of a fungus that is killing bats.