A cave system running 25 kilometres under the Hungary-Slovakia border, a UNESCO World Heritage site shared by two countries. The Baradla passages hold enormous dripstone formations and a concert hall used for its acoustics; the Slovak side’s Domica connects to it underground. Human use goes back seven thousand years. PUBLIC guided tours, Aggtelek, Hungary.
Hungary
See it on the map
Other places on the map within a couple of hours.
