Earlier this week cavers taking part in the 2012 Sledi Vetra expedition successfully connected two caves to form the longest cave in Slovenia. Measuring in at 24.9 kilometers (15.4 miles) long and 975 meters (3199 feet) deep, the Migovec System surpassed the previous record of 20.5 kilometers (12.7 miles), held by Postojnska Jama, when it was connected to the nearby Vrtnarija System |