If you havn't been here, why not ? I highly recommend the experience. If you have any physical limitations, you might want to reconsider the underground experience. Not for those afraid of closed in spaces or the dark, BUT, the entire experience is one that you'll want to remember for a long time to come. The formations inside the caverns are just beautiful, the tour guide doesn't sound 'bored' by his job, nice gift shop. Good prices too.