Luray Caverns, in Virginia is a great cave to visit. If you’ve never been to a cave before, this is a great introduction to caves. The 1 1/2 mile tour lasts an hour or so. It is 54° year round.
Postojna Cave, Slovenia
Postojna Cave is near Postojna, southwestern Slovenia. It is one of the largest cave systems in Europe. June 2015 Postojna Cave system reached a new length. It is now officially 24,120 m (79,130 ft) long. Cave divers have extended the