Indiana Caverns, Indiana's newest show cave, is part of the longest cave system in Indiana at 41+ miles and one of the longest in the US. Discovered in 2010 and opened in 2013, Indiana Caverns offers a one hour 20 minute tour that includes a 20-25 minute boat ride. The tour includes underground boat ride, heights, depths, a waterfall, ice age fossils including bones dating back at least 40,000 years, tracks, claw marks and tracks, and formations too. Also available: gem and fossil panning, picnic area and shelter house, interpretive exhibits, Cavern of the Sabertooth cave simulator, Deep Darkness exploring trip and karst feature surface trail. Open daily all year at 9 am, Indiana Caverns is less than 5 minutes from Exit 105/Corydon on I 64.