Have you heard of The Lost Sea in Sweetwater? Well. You should have. Mainly because it’s the largest underground lake in the United States, but also because it’s pretty much in your backyard. This is a place where your kids can marvel at the cave walls, find themselves stunned at the gorgeous reality of nature, and beg to ride glass-bottomed boats. Where else can you do that…? Right?! Right. Take a look!

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Have you ever been here? Do you think you would visit this Tennessee underground lake? Let us know in the comments!

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