If the kids are bored with the video games and are yearning for something far from the ordinary, Pay a visit to Fantastic Caverns, a spectacular underground chamber. Discovered in 1862 by John Knox's hunting dog, these huge caverns are filled with stalactites and stalagmites. All tours take place on a guided jeep-pulled tram in order to preserve the natural features and each tour lasts about an hour. The underground temperature remains at or near 60 degrees, so dress appropriately. Another thing to remember before visiting the cave is that hours of operation vary as per season.
Riverbluff Cave is approximately 830,000 years old and one of the oldest existing fossil caves in the country. The cave is used as a paleontology site and is extensively used for research purposes. Pleistocene Fossils are one of the major discoveries from the cave and is mostly available for virtual tours.