Illinois Caverns State Natural Area 4369 G Road, Waterloo, IL 62298

"Amazing!! Definitely bring sturdy shoes/boots with good treads. Water level was occasionally up to our knees. Kids had a blast."

"This is a great place to go for a wild caving experience. You must be in groups of at least 4 people and have 3 sources of light and backup batteries for each. There is a building to check in at and a waiver to sign. We spent about 4 hours underground. Most of the walking is in about knee deep water. The cave is around 58 degrees year round so it is a rather chilly hike. Some of the passages are pretty tight, but not too bad. We had a great time exploring this natural wonder."

"The cave was super cool for what we saw . We are going back as we weren't prepared for the water. Definitely bring extra clothes and shoes ! Changing area is available."

"This is a very unique experience. It's moderately difficult, lots of climbing, in the dark on slippery rocks. Totally worth it! Make sure you understand the rules before making the trip!"

"You can visit for free and I highly recommend it. If you don't want to go in the cave you can still go to the visitors center and there's a lot of material to read. The staff are volunteer and it's only open Saturday and Sunday."