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The Lost Sea Adventure

140 Lost Sea Rd, Sweetwater, TN 37874-6724
+1 423-337-6616
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Review Highlights
Family Fun

This was a fun and informative trip with my family! They learned about caves and rock formations... read more

Reviewed yesterday
Stephanie C
via mobile
Great cave

This was an awesome cave to explore! And our tour guide Kim was just the best. However, we did have... read more

Reviewed 3 days ago
Allie S
via mobile
Read all 917 reviews
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The Lost Sea is open daily except Thanksgiving Day and Christmas Day. The Lost Sea is America's Largest Underground Lake. All tours are guided tours and last for approximately one hour and twenty minutes. Reservations are not required. The adult rate is $19.95 and children 5-12 are $10.95 children 4 and under are free. We do offer a group rate for groups of 15 or more. We also offer a Wild Cave Adventure tour for groups of 12 or more. You may even spend the night on the Wild Cave Tour. The Lost Sea is also a Civil War Trail Marker. The oldest known date in the cave is a date of 1863. This date has been carbon tested and does prove to be an authentic date.
  • Excellent43%
  • Very good37%
  • Average15%
  • Poor4%
  • Terrible1%
Travelers talk about
“underground lake” (137 reviews)
“boat ride” (254 reviews)
“rainbow trout” (65 reviews)
Closed Now
Hours
Hours Today: 9:00 AM - 5:00 PM
Suggested Duration: 1-2 hours
LOCATION
140 Lost Sea Rd, Sweetwater, TN 37874-6724
CONTACT
Website
+1 423-337-6616
Write a ReviewReviews (917)
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All reviews
"underground lake"
in 137 reviews
"boat ride"
in 254 reviews
"rainbow trout"
in 65 reviews
"glass bottom"
in 60 reviews
"glass blower"
in 42 reviews
"tour guide"
in 93 reviews
"nature trail"
in 22 reviews
"gift shop"
in 69 reviews
"total darkness"
in 18 reviews
"general store"
in 45 reviews
"feed the fish"
in 14 reviews
"gem mining"
in 12 reviews
"beautiful cave"
in 12 reviews
"under ground"
in 10 reviews
"worth the trip"
in 14 reviews
"cave system"
in 16 reviews
"interesting history"
in 15 reviews
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1 - 10 of 912 reviews

Reviewed yesterday via mobile

This was a fun and informative trip with my family! They learned about caves and rock formations first hand and got to see an amazing part of nature. The awe and wonder on their face was worth going out of our way to take the...More

Thank Stephanie C
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 3 days ago via mobile

This was an awesome cave to explore! And our tour guide Kim was just the best. However, we did have some older folks in our group and one with a cane. They couldn’t walk as fast as some of the young ones, but Kim was...More

Thank Allie S
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 4 days ago

Visited with 3 grandkids age 11 to 15. Great time. Kids loved it. A little bit of a walk to get to the boat, but we’ll worth the effort. Staff is friendly and knowledgeable

Thank celendermp
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
See more reviews
Reviewed 4 days ago via mobile

The cave is beautiful and comes with a corny joke telling guide. However, it is not mentioned until you are deep within the cave that to get to the boat ride portion you will have to be able to walk up a very steep incline...More

Thank quistk
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 6 days ago via mobile

We had friends over the Fourth of July and took them somewhere they had never been. And neither had the Mrs. After a little ride down 75 we arrived at the place. We did the usual "touron" stuff just for the heck of it and...More

2  Thank Dee F
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 1 week ago via mobile

This was a fun visit to cave lake! They talked a lot about the fish, but they put them there and that isn’t all that interesting. Would be more interesting to go in the lake. The caves were beautiful and a ton of history. I...More

1  Thank Michelle A
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 1 week ago via mobile

Once you've been to one underground cavern you’ve pretty much been to them all. But this one is worth the trip for the underground lake. It was amazing and I’m so glad we stopped.

2  Thank jaspereb
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 1 week ago

Great experience and sights. Well organized for the amount of visitors but the tour seemed rush and our young guide should have been more knowledgeable about historical and cultural significance. Must see nonetheless!

Thank morriscrady
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 1 week ago

This was a great activity. Went with my two grandsons (ages 12 and 7) and they were the perfect age to appreciate it. Lots of interesting rock formations, cool interior (a welcome respite from the heat!), and the underground sea was crystal clear. It was...More

1  Thank swerdmama
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Reviewed 1 week ago via mobile

We had a very good experience at this underground adventure. We had adults and kids ranging from 10 to 19. Everyone enjoyed it. Our guide seemed very knowledgeable and pointed out all of the interesting bits on the tour. The lake was really amazing, the...More

Thank Kim B
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
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Ask a question
Questions & Answers
Lynn L
June 24, 2018|
Answer
Response from DDay1959 | Reviewed this property |
No elevator
0
Votes
Pam E
June 21, 2018|
AnswerShow all 4 answers
Response from Pabrunotts67 | Reviewed this property |
I honestly don’t know the answer to that question. Sorry for the delay in my response.
0
Votes
Lorri D
June 9, 2018|
AnswerShow all 11 answers
Response from 566shink | Reviewed this property |
It is not flat , damp and little slippery in few spots. But you can manage if you broken ankle is fixed. You may need a cane or some help from friends
0
Votes