If you have not ever been to Indian Echo Caverns, then you should make a trip there just for the experience. Yes, it's a cave. A very big cave. You take a guided tour through the caverns on foot (not by boat like some cavern tours in other areas) and learn all about how caves are formed, what stalagtites and stalagmites are, etc. There's some Indian history thrown in to boot. It's a great place to take kids who are old enough to appreciate it. I recommend you take a tour if ever in the area.