Lights Under Louisville, located in the Louisville Mega Cavern, is a magical drive-through holiday light show situated 100 feet below ground. "Because we are underground we're dark all the time ...

One of the city's more unique attractions, the 100-acre Louisville Mega Cavern, which was created out of a 19th-century limestone quarry, now houses the world's only underground zip line course.

Neon Rush Ziplines opened at the end of May in Louisville Mega Cavern, which is home to the only fully underground zip line course in the world. It sounds like this update makes it that much more ...