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The Lost Sea is the United States' largest non-subglacial subsurface lake and the world's second largest. It is located within the Craighead Caverns, a vast cave system located between Sweetwater and Madisonville, Tennessee, in the foothills of the Great Smoky Mountains. 21-Apr-2020
The Lost Sea is the United States’ largest non-subglacial subsurface lake and the world’s second largest. It is located within the Craighead Caverns, a vast cave system located between Sweetwater and Madisonville, Tennessee, in the foothills of the Great Smoky Mountains. 21-Apr-2020
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