Indiana is home to a variety of interesting caves, each with their own fascinating histories. From caves you can tour via boat to walking caves to tiny, little-known caves in forests and state parks, Indiana's caves are definitely worth exploring. There's one Indiana in particular you should check out, because it's filled with ancient mysteries.

Located just outside of the historic town of Corydon, Indiana Caverns is one of the most popular attractions in the Hoosier State. It's part of the Binkley Cave System, the longest in Indiana and 11th longest in the entire country.

One of the neat things about the caverns is that you get to explore them by boat and by foot. This hour and a half tour takes visitors 110 feet underground. The walking tour takes roughly one hour, while the boat tour is just under a half hour.

During the tour, visitors will learn about the history of this tremendous cave system and get to take in incredible cave draperies and formations that have formed over thousands and thousands of years. Cave species like crayfish and bats can also be spotted along the tour.

This cavern is also famous for its tremendous 40-foot waterfall and gigantic cave boulders (which are a part of Big Bone Mountain). But one of the most fascinating parts of this tour is learning about the amazing mystery that was uncovered here.

In 2010, cave explorers stumbled upon something remarkable: prehistoric bones. These bones were found to date back to the Ice Age and were roughly 40,000-years-old at the time of discovery.

Since then, more bones and fossils of species such as bears, snakes, bison, and more have been discovered. Even peccary skulls were found. All bones found belong to the Pliestocene era of the Ice Age, but researchers believe there could be more incredible finds hiding within the cavern walls. Some of these bones and fossils can be spotted along the walking tour.

Additional attractions within Indiana Caverns include gemstone mining, a Cavern of the Sabertooth adventure (perfect for kids), and exploring the unique onsite gift shop. You can visit this extraordinary cave system daily, starting at 9 a.m. (Note: Arrive before 4 p.m. if you're hoping to complete a tour.) You'll find Indiana Caverns at 1267 Green Acres Drive SW, Corydon, IN 47112.

Have you ever taken this fascinating tour through this cave shrouded with ancient mysteries? What was your favorite part?

For a complete list of cave adventures in Indiana, read on.