Take the family on a very unique underground dinosaur safari this April at Louisville Mega Cavern. Louisville Mega Cavern is one of the largest caverns in the United States. Hence why it's called the "Mega" Cavern. If you've never been there before, there's so much more to it than just walking through a giant cave. They have the world's only fully underground Zip Lines & Adventure Tour (MEGA ZIPS), the world’s only fully underground aerial ropes challenge course (MEGA QUEST), a 10-stories-underground Historic Tram Tour (MEGA TRAM), the largest indoor bike park in the world (MEGA BIKE PARK), a guided e-bike tour (MEGA E-BIKES), and of course, Lights Under Louisville, the world's only fully underground holiday light show. This April, they'll have another cool attraction that you and the family might want to experience.