The Lost Sea

The Lost Sea is a registered National Landmark and the world's second largest underground lake after Dragon's Breath Cave in Namibia, Africa. The lake has a visible surface area of approximately 4.5 acres and a total of 12 acres has been mapped under water.

It is part of a vast cave system called Craighead Caverns that extends underneath a mountain in Sweetwater, Tennessee. The cave contains fossils from the Pleistocene epoch and large volume of crystal clusters.

the lost sea 2

Guided walking and boating tours are available every day except Christmas and wild cave tours are available for groups, by appointment.

On Saturdays at 1 p.m., the Lost Sea offers a 3 hour walkup wild cave tour for individuals and small groups without reservations. A change of clothes is highly recommended.

Related Activities
Walking, Hiking, Wildlife Viewing

Activity Type
Family, Leisure

Distance from Outdoor Chattanooga
76.7 miles | 1 hr. 20 min.

GPS Coordinates
35.534845, -84.431222‎

Google Map to the Lost Sea

Contact Information
The Lost Sea Adventure
140 Lost Sea Rd.
Sweetwater, TN 37874
Phone: 423-337-6616
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lost Sea Adventure Website

The Lost Sea