One of the world's most fascinating geological wonders, Indiana is actually home to an impressive amount of caves. From large openings and overhangs with deep recesses to caves covered in crystals, all of the caves featured on this list are easily accessible and open to the public for exploration.
These caverns contain some of the most beautiful natural landscapes and rock formations this state has to offer. Keep reading to find out more about these incredible Indiana caves and where to find them.
Indiana Caverns | Corydon
Indiana's longest cave, the Indiana Caverns are also known as being the 7th largest cave in the country. Tours here allow you to walk and explore via boat ride 110 feet underground. In addition to intriguing rock formations, this cave also contains an extensive ecosystem with 21 species of troglobites.
Marengo Cave | Marengo
Indiana's most popular natural attraction, Marengo features two walking tours, the Crystal Palace and the Dripstone Trail. You'll be able to see many types of natural cave formations here including the Penny Ceiling, which features thousands of pennies, and a brief plunge into total darkness.
Bluespring Caverns | Bedford
Known for having the longest underground river in the United States, tours of the Bluespring Caverns allow you to explore this stunning cave by boat. While on the hour-long boat ride, you may encounter bats, crayfish, salamanders, and other cave-dwelling creatures.
Squire Boone Caverns | Mauckport
Squire Boone Caverns were discovered in 1790 by Squire Boone, a prominent explorer. You can explore this wondrous cave yourself centuries later as you wind down the spiral staircase that opens up to waterfalls, streams, and some pretty amazing rock formations, some of which are nearly 40 million years old. This park consists of a one-hour walking tour into the caverns, as well as a working pioneer village and grist mill where you can feed farm animals.
Sullivan Cave | Springfield
Perfect for true cave explorers who want to adventure on their own rather than embark on a guided tour, Sullivan Cave is located in Springfield on a 28-acre property owned by the Indiana Karst Conservancy. To gain access to the Sullivan Cave, you will need to apply to the cave patron, and comply with all of the Conservancy’s guidelines to preserve the integrity of the cave.