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The Lost Sea Adventure
Attraction
4.7 (6908 reviews)
Family attraction taking visitors through a cave network & for boat trips on an underground lake.
140 Lost Sea Rd, Sweetwater, TN 37874
+1 423-337-6616
Did You Know?
Largest Underground Lake
The Lost Sea Adventure is home to America's largest underground lake, an immense body of water located deep within the Craighead Caverns.
Boat Tours
Visitors can explore the vast underground lake on unique glass-bottom boats, offering a clear view of the water's depths and any aquatic life below.
Ancient Fossil Find
Evidence of ancient life has been discovered in the caverns, including the fossil of a trilobite, an extinct marine arthropod, dating back millions of years.
Blind Fish Habitat
The Lost Sea is home to various unique cave-dwelling creatures, including blind trout and crayfish that have adapted to life without light.
Highlights from Reviews
• knowledgeable guides
Tour guides like Bella, Kieran, Thomas, and Chuck were consistently praised for their humor, knowledge, enthusiasm, and ability to make the experience enjoyable and informative.
• unique underground lake
The highlight for many is the large underground lake, offering a unique boat ride experience with rainbow trout, making it a memorable and distinctive attraction.
• well-maintained facility
The entire facility is noted for being clean, well-maintained, with wide, well-lit paths, handrails, benches, and ample, clean restrooms.
• cool escape
The cave's naturally cool temperature provides a perfect escape from hot outside weather, offering a comfortable environment for exploration.
• rich history
The cave offers fascinating historical insights, including its use for saltpeter mining, as a fallout shelter, and evidence of a moonshine still.
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