The Lost Sea is located in Sweetwater, Tennessee, and is precisely where you should head if you’re looking to enjoy an underground tour that will leave your jaw on the ground. As the largest underground lake in Tennessee, and the United States — the Lost Sea is a sight to see. Although it takes a bit of work to get to it…

The Lost Sea in Tennessee is America's largest underground lake, discovered by thirteen-year-old Ben Sands in 1905. It's located in the greater realm known as Craighead Caverns, an extensive cave system that is located between Sweetwater and Madisonville, Tennessee.
Flickr/Joel Kramer
About 150,000 visitors visit The Lost Sea on an annual basis, touring the cave and taking their glass-bottomed boat tour across the still waters. It's normally under sixty degrees down by the ever Lost Sea, but the humidity may rise during certain times of the year.
Flickr/Joel Kramer
What a beautiful shot - wouldn't you say? Don't worry about being claustrophobic, either - a majority of the caves in the Lost Sea vicinity could fit a two-story house!
Flickr/Joel Kramer
It really brings a new meaning to the word, "cavernous," doesn't it? The Lost Sea Adventure actually has a neat past, an idea in 1915 grew into the realization of a dance floor in the upper rooms and moonshiners using the natural refrigeration during prohibition.

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Flickr/Kreg Steppe
Keep an eye out for cave flowers! Officially known as anthodites, these spiky clusters of rock are only found in a few places around the world.
Flickr/Joel Kramer
Planning a visit? You can pop through a couple of stores, enjoy a bite to eat at their kitchen or even their delicious ice cream parlor. There are tons of picnic spots that make it easy to stay budget friendly and bring lunch, if you'd so prefer.
Tour rates vary depending upon the number of people in your party as well as their ages, so make sure to give 'em a call to find the best deal for your family. Also, keep in mind, you'll be walking roughly 140 feet below the surface, and coming back up can prove a bit difficult for some.
Flickr/Nick Chapman
You can visit for yourself at 140 Lost Sea Road, in Sweetwater, Tennessee. Take a tour and enjoy an afternoon on their glass bottomed boat - each runs about an hour and fifteen minutes. It's a life experience you simply can't miss.

Did you know that the Volunteer State plays host to the largest underground lake in the United States, the Lost Sea in Tennessee? This Tennessee underground lake is pretty crazy…Continue the adventure by visiting abandoned ruins along the Elkmont Nature Trail.

And for more information and to plan your own visit, check out The Lost Sea Adventure website.

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The Lost Sea in Tennessee

Beth C. | January 04, 2021

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Sweetwater, TN 37874, USA