We spent a very informative and fun couple of hours (we were on a road trip) to stop and take the tour of these magnificent caves. As we were limited by time, we toured with 20 young home schooled students so it was lively and high energy. The Park Naturalist was wonderful with the children and adults alike (don't brush against the side of the cave wall or your pants will be stained for life!) The museum above the gift shop is a must see before entering to the caves. An amazing value at $8 / adult.