About Louisville Mega Cavern: History
Louisville is home to one of the largest caverns in the United States...so large, it has been dubbed the "MEGA” Cavern!
What once started out as Louisville Crushed Stone
and one of the best kept secrets in the city of Louisville, Kentucky
has now been revealed to the public. It was created by a massive limestone quarry—with miners blasting out a mind-boggling amount of rock for over 42 years during the middle of the 20th century. It was acquired in 1989 by private investors who saw the potential to develop a portion of the cavern into an environmentally-conscious high security commercial storage facility.
Photo courtesy of Ralph Rogers Group.
Since the early 1990's, a massive amount of recycled concrete, brick, block, rock and dirt were (and continue to be) off-loaded at the cavern to fill in the holes and create floors and internal roads. Construction to carve out offices and storage spaces is ongoing, making just a dent in the more than 4,000,000 square feet of space. Even though it’s underground, the Louisville MEGA Cavern is actually the largest building in the state of Kentucky—and by tonnage is the largest recycling center in the state. Now you can experience all the wonder and adventure of this unique attraction.