The following is the reason I asked you this when you mentioned The South and cave.
TAG Corner (or simply
TAG:
Tennessee,
Alabama, and
Georgia) is a name for the region where the U.S. states of
Tennessee,
Alabama, and
Georgia come together. It is a mountainous area dominated by the
Cumberland Plateau and
Lookout Mountain, with elevations ranging up to 2,000 feet (610 meters).
The term TAG Corner seems to find the most use among devotees of
caving, although cavers usually just call the area "TAG".
[1][2]Because of the limestone geology of the Cumberland Plateau, the area is one of the finest for caving in the United States. TAG is especially known for vertical caving due to the depth of many of the caves.