Crag Cave (cragcave.com; adult/child €17/7) was discovered in 1983 when problems with water pollution led to a search for the source of the local river. In 1989, 300m of the 4km-long cave were opened to the public; admission is by 30-minute guided tour involving 72 steps.
The remarkable rock formations include a calcite straw-filled "Crystal Gallery," a domed "Cathedral" with stalagmites shaped like candlesticks, and a stalagmite shaped (to some) like a statue of the Madonna. Dress warmly for the cave’s chilly 10°C temperature. There are play areas for kids, a cafe and a gift shop. The cave is signposted 18km east of Tralee.
