The Black Hole is a large sinkhole where the ground has caved into an underlying cave, forming a huge hole in the ground that drops 400 feet. The hike to the sinkhole takes about an hour, going over 4 hills. It can be a strenuous hike but u will go at a comfortable pace. As you head up the 4th hill you get your first view of the massive opening and looking at the cliff face you begin to get butterflies about repelling off of it. Next, you strap on you harness and go over the edge. This is by far the hardest part, trusting the rope. It's a bit scary at first, but you won't regret it. After that, it’s a scenic descent 400 feet to the bottom.