The Bluegrass State – which appears to be situated on solid soil and rock. It is home to Kentucky’s countless caves. From the small caves to the medium sized caves up to the famous Mammoth cave, the largest cavern system of the world with more than 400 miles of known passageways.
Also, former limestone mines turned into Louisville’s Mega Cavern. The mines were used for multiple purposes in its history. One of them is entertainment, and it also functioned as a public shelter that ended with the cold war. Deep below the bluegrass.
Psi Productions investigates.