| Craighead Caverns | |
|---|---|
 Anthodite formation | |
  Craighead Caverns Location in Tennessee  Craighead Caverns Location in United States | |
| Location | Sweetwater, Tennessee |
| Coordinates | 35°32′08″N 84°25′52″W / 35.53556°N 84.43111°W |
| Designated | 1974 |
| Website | Official website |
Craighead Caverns is an extensive cave system located in between Sweetwater and Madisonville, Tennessee. It is best known for containing the United States' largest and the world's second largest non-subglacial underground lake, The Lost Sea. In addition to the lake, the caverns contain an abundance of crystal clusters called anthodites, stalactites, stalagmites, and a waterfall.