About The Lost Sea
Old Sweetwater Village

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Get Ready to take an unforgettable adventure!

You have never seen, heard, or done anything like this before...

The Lost Sea is America's largest underground lake, located in beautiful Sweetwater, Tennessee. We are open every day of the year for tours (except Christmas Day).
You will love our General Store, Ice Cream Parlor, Gem Mine and Glassblower. Our cafe, the Cavern Kitchen, offers sandwiches and real pit barbeque to hungry visitors. Ample picnic facilities and a nature trail are also available.


The Lost Sea Nature Trail

The Lost Sea Nature Trail

This trail will take you through a cove-hardwood forest, typical of forest conditions of the Southern Appalachian Mountains around the turn of the century. The forest is made of a community of plants and animals that is considered the most diverse in the world. The trail is a 1/3 mile self-guided trail.





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The Lost Sea is proud to be a member of the Southern Highlands Attractions, the most highly acclaimed visited points of interest in the Southern Highland Region of the United States.

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The Lost Sea is also a member of the National Cave Association, which stresses preservation of these glorious natural resources.


Super Saturday Tours

Wild Cave Tours