45°50′28″N 15°52′25″E / 45.841058°N 15.873642°E Veternica is a cave located on Medvednica mountain in Zagreb, Croatia. At 7,128 metres (23,386 ft) long,[1] it is the longest known cave on its massif, and an estimated 6 km or more remain unexplored.[2]: 6 In the 1960s, briefly became the longest cave in Croatia.[1] The first 380 m (1,250 ft) is available to visitors. In 2019, it had 5787 visitors.[3] It is an archeological site where remains of several kinds of prehistoric animals as well as humans have been found.[4] The cave has been protected by law since 7 July 1979,[3] with registration as a Natural Monument on 11 July of that year.[1]: 19
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