 There are numerous caves in Croatia, 49 of which are deeper than , 14 deeper than and 3 deeper than .The longest cave in Croatia, Kita Gaćešina, is at the same time the longest cave in the Dinaric Alps at .The Pannonian Basin took shape through Miocenian thinning and subsidence of crust structures formed during the Late Paleozoic Variscan orogeny.