The Lost Sea

Stroll through an 18th century village, explore huge fascinating caverns, then float across America’s largest underground lake!

In times past deep inside a mountain near Sweetwater in East Tennessee is a remarkable body of water known as The Lost Sea. Listed by the Guinness Book of World Records as America’s largest underground lake, the Lost Sea is part of an extensive and historic cave system called Craighead Caverns.

The caverns have been known and used since the days of the Cherokee Indians. From the tiny natural opening on the side of the mountain, the cave expands into a series of huge rooms. Nearly a mile from the entrance, in a room now known as “The Council Room,” a wide range of Indian artifacts including pottery, arrowheads, weapons, and jewelry have been found, testifying to the use of the cave by the Cherokees.

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Latitude: 35.5858516 Longitude: -84.440918 Elevation: 1167 ft

Hours Open

Hours depend on the season, please visit our website for more information

Seasons Open

We are open every day of the year for tours (except Christmas Day)

Visitor Fees

Adult: $17.95, Child: $ 7.95 (ages 5-12). Children under 4 are free. Special pricing for Group Rates.

ADA Accessibility Notes

Not Handicap accessible due to the steep incline into the cave.


An amazing natural attraction that you will love. The caverns are filled with beauty and history. The glass bottom boat ride on the underground lake is an adventure in itself. Outside enjoy the blacksmith and glassblower’s shops along with others, and eat at the cavern restaurant which is sure to please you.

Julie, 6/28/2011

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