The Mammoth Cave Exploration will uncover the hidden secrets of the world's longest cave system! We spend one day hiking above ground exploring sink holes and the Green River which formed the caves. Then, we spend a day inside the cave itself learning safe caving techniques, climbing up cave walls and through tight crawlway openings in order to see the majestic sights of Kentucky's underground wonder, which include Carmichael Entrance, Cleveland Avenue, Split Rock, Snowball Room, Boone Avenue, and Frozen Niagara.