The kids love caves, so Lehman Cave was right up their alley. We booked the longer Grand Palace tour since all of the kids were old enough for that one. Great cave, with a lot of formations in every room. The pace of the tour allowed for a lot of picture taking. The wet winter created a lot of pools in rooms that had been dry for several years, so that was neat to see. I'd do this one again.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.