Used to float the Jacks Fork back in my college days. One of my classmates and his family had a float service, and he was working on a class project mapping geologic contacts along the river so of course several of us had to help him. There are a number of caves including one I think was called 'Jam Up' cave. someplace I have a picture of me and my group taken from the mouth of the cave but not sure I can put my hands on it. Floating was a nice change from backpacking, we could bring cast iron skillets and do some 'Shannon County Fishing' for shore lunch. I remember the waters of Blue Spring joining the Jack, it was beautiful, and I took several trips through that water. The Lewis family (my buddy) was always gracious and fed us real home-cooked food before and at the end of the trip.