Hart County is home to two different options for ziplining.
Hidden River Cave has a short zip across the base of the cave & they also offer rappelling down the mouth of the cave. Both of those harnessed-up adventures can be combined with a wild cave tour or a regular walking cave tour as well. And as of 2018, the cave tour includes the longest underground suspension bridge in the world! Whew, lots of adventure to be had at Hidden RiverCave.
Also Mammoth Cave Adventures offers several canopy zips at their attraction, plus a drop tower and various ropes courses. They also offer horse back riding and a giant swing. Loads of fun for the adrenaline seekers in your life.
Read more about info on both zip lining options.