National Natural Landmarks

Lost Sea (Craighead Caverns)

Lost Sea (Craighead Caverns)
Lost Sea (Craighead Caverns)

The Lost Sea cavern system includes the largest known underground lake in the country, an abundance of crystal clusters called anthodites, stalactites, stalagmites, and a waterfall. The site once yielded bones and footprints of a giant Pleistocene jaguar.

Location: Monroe County, TN ; Monroe County, TN

Year designated: 1974

Acres: 304

Ownership: Private

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Please remember, National Natural Landmarks (NNLs) are not national parks. NNLs are owned by a variety of public and private entities and allowing visitation is at their discretion. Many NNL sites maintain public websites where additional information may be found.


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