A few days ago I was at the Louisville Mega Cavern. I did Zip Lining in the caves. A bit about the caves: The caves are an old limestone mine. They have huge Zip lines and one of them was 900 ft long! You also get to go see the deep caves. I also like how you also get to explore the caves and Zip-Line. We had really nice guides who’s names were: Stephen, and Cameron. They told us history of the cavern, and got me in my harness. The last Zip-Line is a Zip-Line where you get to race someone. They also have many other activities but I did not do them.