Lost Sea

Lost Sea
140 Lost Sea Road
Sweetwater, TN 37874-6724
(423) 337-6616


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

The Lost Sea is America's largest underground lake, located in beautiful Sweetwater, Tennessee. They are open every day of the year for tours (except Christmas Day). Be sure to bring your camera and be prepared for an unforgettable experience. 

The Lost Sea is only 30 miles away from the Comfort Inn Lenoir City, TN.  Here are the directions:


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For ticket prices to the Lost Sea and to view hours of operation, visit http://www.thelostsea.com