Cerje cave
Pantelej City Municipality, Serbia
Cerje Cave or Cerjanka (Serbian, Cerjanska pećina) is a cave in southeast Serbia. With the length of 7,149 m (23, 455 ft), it is the second longest cave in Serbia after the 9,818 m (32, 211 ft) long Lazar's Cave.
NatureReserve data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).