Gap Cave

Gap Cave is located just underneath Pinnacle Overlook in the Cumberland Gap National Historical Park, Claiborne County, TN. The entrance to the cave is at the tristate area of Tennessee, Virginia and Kentucky, just over the border into Virginia. Currently, the cave has a surveyed length of 18.5 miles and is the 42nd longest cave in the United States and 154th in the world. There are six known entrances: the Gap Cave Entrance (also known as the King Solomons Cave Entrance), an artificial entrance, known as the Cudjo's Cave Entrance, the Stream Entrance, the Soldiers Cave Entrance, the Big Saltpeter Cave Entrance, and the Wellhole. All lead into the same cave, Gap Cave.

Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).