Kings Silver is the second in a series of canyoneering adventures offered by Boyden Cavern Adventures & Tours LLC. This trip is appropriate for most ages, and health levels. However the trip is 6 to 8 hours long and does require hiking, swimming and some rope work. Personal Flotation Device may be supplied, if you have your own we suggest you bring it!!! Be aware at the end of this amazing trip you will still have a 1 hour hike back to the main road. The hike at times is steep with many switchbacks, we stop often, drink lot's of water and take our time on the way out.