It rained all night, but we managed to keep most of our stuff dry. We were thankful that it was just heavy rain and not anything severe (no lightning/tornadoes/hail). When it finally let up a bit, we boiled some water under the roof of the bathroom complex and ate our daily oatmeal breakfast. 

We then headed over to the Mammoth Cave Hotel lobby to take advantage of the free wi-fi and book our cave tour tickets. We lucked out and got free tickets for a self-guided tour. They are having some kind of special no fee week...perhaps for the Easter holiday. 

We looked around the entrance area of the cave for about 30 minutes and ate lunch at the nearby restaurant. We headed back to the campground area and did a couple loads of laundry and relaxed.

After our luxurious dinner of macaroni and cheese, we headed back to the cave for our evening tour. We booked a tour called "Star Chamber" and it started at 6pm. For this tour, they turn off the lights inside the cave and give us lanterns to take instead. It's a neat way of looking at the cave, perhaps similar to the generations before us who visited. The tour lasted about 2.5 hours. Thanks to our rangers Rick and Ronny for all of the interesting information!