Serbia S.O.S.: Discover Serbia: Special Natures Reserve Uvac

Serbia S.O.S.: Discover Serbia: Special Natures Reserve Uvac: River Uvac canyon "Uvac" Special Nature Reserve is a Ist category protected natural asset. The surrounding is characterised by karst surface with numerous karst formations: karst plains, karst depressions, karst sinkholes, rock shelters, caves and potholes.Caves are numerous and vary in size, ranging from rock shelters to  Usak Cave System, the largest known cave system in Serbia (6185 м). Caves are very rich in speleothem deposited by the action of dripping water to form stalactites, stalagmites, columns, draperies, transparent needles etc.