Illinois Caverns State Natural Area
- Status
- Status not posted
- Entrance fee
- Statewide rule — see below
- Day-use reservations
- None mentioned
- Dogs
- Not stated — check with park
- Camping
- None listed
- Official site
- dnr.illinois.gov(618) 458-6699
Official page last checked Oct 29, 2026. How we keep this current
Overview
Illinois Caverns State Natural Area is a natural area in Monroe County, about 8 miles south of Waterloo.
Fees and passes
Free: 'The Illinois Department of Natural Resources (IDNR) does not charge an Entrance Fee to any state owned or operated land.' Camping, cabins and shelters are fee-based.
Statewide fee rule from Illinois's park system; this park’s page doesn’t list its own fees.
Reservations
- Day use
- No day-use reservation requirement mentioned
- Booking system
- ExploreMoreIL (IDNR camping, cabins, group camps and shelters)
We link to the official booking system rather than showing live availability, which changes minute to minute.
Getting there
- Address
- 4369 G Road
Waterloo, IL 62298 - Nearest town
- Waterloo — about 8 mi south (straight line)
- Coordinates
- 38.2340, -90.1370
- Phone
- (618) 458-6699
Nearby state parks
Sources and freshness
- Illinois State Parks (IDNR state parks and recreation areas) — park page — last checked Oct 29, 2026
- IDNR All Parks list (AEM content-fragment list JSON) + each unit's landing page for official title, coordinates, address, phone
“Last checked” is when our system last read the official source. No change has been detected since this page was first published. Hours, fees and rules can change without notice — confirm with the park before you go. Methodology