And after the zipline, it was time for the repel (that's jim heading down first). (It started out very innocently with a repel down a 30 foot face into a small ante chamber. And the only exit to this little room is a small hole where your rope disappeared. Much like the small routes that lead to big things in the mammoth caves in KY, this little hole in the ground opened up into a HUGE cavern. And of course you're dropping through the ceiling, a 160 feet above the ground. I nearly shit a brick when I came out into the cavern. There was no hint in the "instructional" video or basic setup of the magnitude of of the drop. I was sweating bullets and trying to control my body (and my fear of heights) to get over the small lip and then drop in a free repel down to the ground. I really don't like heights . . .not sure I would do it again, but it was a hell of an experience.)       Photo by: d. jiang