Israel’s Beit Guvrin-Maresha National Park has become Israel’s 8th site to join the UNESCO list of the world’s outstanding sites of natural and cultural importance. UNESCO described Beit Guvrin’s man-made caves as a “city under a city”.
http://www.jpost.com/Israel-News/Israels-Beit-Guvrin-celebrated-as-UNESCO-World-Heritage-site-398074