Ellison's Cave

Ellison's Cave is an extensive cave system located in Walker County, on Pigeon Mountain in the Appalachian Plateaus of northwest Georgia. The cave is owned and managed by the Georgia Department of Natural Resources (GA DNR). It is the 19th deepest cave in the United States and features one of the deepest pits in the U.S., named Fantastic Pit (586 feet, 179 m). In total, the cave has over 12 miles (19 km) of known passage and a vertical extent of 1,063 feet (324 m) making it the 19th deepest cave in the United States. Water from the cave resurges from a natural spring at the foot of the mountain called the Blue Hole. The cave is well-known to cavers throughout the U.S. and it is frequently visited.

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