The Lost Sea: Exploring America's largest underground lake in

Deep in the foothills of the Smoky Mountains, about 50 miles south of Knoxville, Tennessee, sits an wonder 140 feet below ground: the largest underground lake in America

The Lost Sea Tennessee River Valley

The Lost Sea: America's largest underground lake

Discover America's Largest Underground Lake, The Lost Sea, in the Foothills of the Great Smoky Mountains - Smoky Mountain Events

Go See Tennessee: The Lost Sea

The Lost Sea, Sweetwater, Tennessee

History - The Lost Sea

The Lost Sea: An Underground Lake in Tennessee

The Lost Sea is the USA's largest underground lake in Sweetwater, Tennessee, and covers and impressive 4.5acres through t…

Lost River Cave a historical and geological gold mine