Illinois Caverns State Park

Waterloo, Illinois
Established 1901
120 acres
Illinois Caverns State Park hero image

Drapery and flowstone in Chimney Dome (Figure provided by A. Frierdich)

Illinois Caverns State Park is home to one of the few publicly accessible caves in Illinois, offering guided cave tours, scenic picnic areas, and unique geological features. The park preserves rare cave ecosystems and provides opportunities for adventure and exploration in a beautiful rural setting.

Entrance Fee

Free

Visiting with Dogs

Dogs allowed on trails, leashed at all times; not permitted inside caverns. Owners must clean up after pets.

Visitor Tips & Reviews

What Visitors Say

Visitors love exploring the unique, self-guided cave system, cool underground streams, and natural formations, making Illinois Caverns a thrilling and memorable adventure for families and groups.

Tips from Visitors

  • Wear sturdy shoes for uneven, slippery cave floors.
  • Bring a flashlight or headlamp for dark areas.
  • Check for seasonal closures before visiting.
  • Dress in layers; cave temperature is cool year-round.
  • No pets allowed inside the caverns.
  • Pack out all trash to keep the park clean.

Amenities

RestroomsParkingPicnic AreasInterpretive DisplaysSheltersDrinking Water

Nearby Attractions

Explore these attractions near Illinois Caverns State Park:

  • Salt Lick Point Land and Water Reserve
    A scenic reserve offering hiking trails with panoramic views of the Mississippi River bluffs and diverse wildlife.
    10 miles away
  • Fort de Chartres State Historic Site
    A reconstructed 18th-century French fort with historical reenactments and museum exhibits.
    18 miles away
  • Pierre Menard Home State Historic Site
    Historic home of Illinois' first lieutenant governor, showcasing early 19th-century architecture and local history.
    21 miles away

Things to Do at Illinois Caverns State Park

Cave ToursPicnickingWildlife ViewingPhotographyNature Study

Camping at Illinois Caverns State Park

No camping at Illinois Caverns; try nearby Randolph County or Turkey Bluffs for overnight stays.

Hiking Trails

Illinois Caverns State Park offers a unique hiking experience with its scenic trails leading to the entrance of the caverns. Hikers enjoy peaceful woodlands, wildflowers, and opportunities to spot local wildlife. The trails are generally easy to moderate, making them suitable for families and casual hikers. Visitors often highlight the cool, refreshing air near the cave and the park’s quiet, less-crowded atmosphere.

Illinois Caverns Main Trail

Moderate

A scenic loop trail that explores the woodlands and karst landscape surrounding the caverns entrance.

2.5 mi
1.5 hours
150 ft gain
Moderate difficulty

Cave Entrance Overlook Trail

Easy

A short trail leading to an overlook with views of the Illinois Caverns entrance and surrounding forest.

4,224 ft
30 minutes
60 ft gain
Easy difficulty

Karst Nature Trail

Easy

An interpretive trail highlighting unique geological features and native plant life of the karst terrain.

1.2 mi
45 minutes
75 ft gain
Easy difficulty

Sinkhole Loop Trail

Moderate

A loop trail passing several sinkholes and offering opportunities for wildlife observation.

1.7 mi
1 hour
110 ft gain
Moderate difficulty

Directions

From Waterloo, take Route 156 west, turn left onto G Road, and follow signs for Illinois Caverns State Park. The entrance is about 6 miles southwest of Waterloo.

Frequently Asked Questions

Is Illinois Caverns State Park open to the public?

Yes, Illinois Caverns State Park is open seasonally, typically from April through October. Check the official website or call ahead for current hours and conditions.

Do I need a permit or reservation to visit the caverns?

No permit or reservation is required for individual visitors, but groups of 25 or more should call ahead. All visitors must sign in at the office before entering the cave.

What should I bring when exploring the caverns?

Bring sturdy boots, a helmet, and at least three sources of light per person. The cave is wet, muddy, and dark, so dress appropriately and be prepared for slippery conditions.

Are guided tours available at Illinois Caverns?

No guided tours are offered. The caverns are self-guided, and visitors explore at their own risk. Staff provide safety information and maps at the entrance.

Is the cave suitable for children and beginners?

The cave can be challenging due to slippery, uneven terrain and low ceilings. It is recommended for older children and those comfortable with rugged conditions. Supervise children closely.

Are there facilities like restrooms or picnic areas at the park?

Yes, the park has restrooms, picnic tables, and a shelter near the parking lot. There are no facilities inside the cave itself.