We stayed here for a night while visiting the cave as part of our honeymoon travels. The cave was absolutely amazing! The group that went in was very small. Our tour guide was fantastic and so knowledgeable. I have never seen so much wildlife in a cave tour before, and I have been in caves not normally open to the public. This park is very protective of its cave and takes many measures to ensure the health of its wildlife. Well staffed and everyone is very friendly, helpful and informed. If you were thinking of going to Meramec Caverns, skip it and go here instead. The Onondaga tickets were cheaper and the cave is well maintained. Not commercialized with Lassie cutouts and laser light shows to distract you from the fact the cave is dead: both its formations and its wildlife from the 24/7 365 exposure to light and humans. Onondaga is a much better experience!