May 28 Local News MEGA Cavern Opens Monday A new tourist attraction opens Monday in Louisville. The former limestone mine under the Louisville Zoo is now called “MEGA Cavern” – and gives visitors a tour of the 100 acre cavern via SUV. Co-owner Jim Lowry hopes it will be a popular spot for school field trips – because it will include lessons in […] By Stephanie Crosby May 28 Local News MEGA Cavern Opens Monday Stephanie Crosby