The cave tours were great. 2 1/2 hours was just long enough for the boys and I, and Ken's tour with the girls at 4 hours was time well spent. Mammoth Cave lives up to its name in size! It is truly cavernous! Cave photos are always a bit dodgy, but you could go to the website to see some professional ones.
A surprise for Sophia followed, with a trip to Jesse James Horse Rides. While the others went riding, I spent time contemplating the universe in silence - bliss!