We arrived at Mammoth Cave National Park in the late afternoon and setup our tent at the camp site. We had missed the last cave tour so we bought tickets for the first one the next morning and then headed out for a short hike.
We took the Green River Bluffs Trail which led us to a river overlook then down a good dozen switchbacks to a cave entrance where a creek flowed out. Being late in the day, Trey was a bit tired so I carried him back up the bluffs as the dusk settled in. Needless to say, my legs were quite sore the next morning!