Discovered by two boys in 1880, the cave has been exploited as a tourist sensation ever since. The entrance is through the requisite "trading post," but once inside the cave you'll forget the hype and commercialism. The cave contains examples of every major sort of limestone formation, from stalactites and stalagmites to delicate cave flowers, rare anthracite crystals, flowstone (rather like candle wax), and cave coral. Enthusiastic guides for the 45-minute tour also run more adventurous cave expeditions. A special lantern tour lasts 1½ hours.