Located in the South Dinaric Karst range in southern Bosnia and Herzegovina, Vjetrenica Cave, measures 7,324 meters in length and forms part of the Trebišnjica river system. More than 230 taxa have been recorded in the Vjetrenica Cave System, including 180 animals, 14 fungi and 35 protists. Vjetrenica Cave is habitat for the only subterranean tubeworm in the world (Marifugia cavatica) and the only freshwater hydrozoan living exclusively in groundwater (Velkovrhia enigmatica). IntegrityThe area of Vjetrenica Cave (22.87 ha) is embedded within the larger property (413.97 ha). Key management requirements centre on the protection of the attributes of the unique biodiversity, karst geological features and the wider watershed of Vjetrenica Cave.