attraction in Tennessee – lost sea

Family attraction taking visitors through a cave network & for boat trips on an underground lake.
Address: 140 Lost Sea Rd, Sweetwater, TN 37874
Hours: Open today · 9AM–5PM

Hours Of Operation
(Lost Sea is located in the Eastern Time Zone)

Dates Open Close
January, February 9:00 am 5:00 pm
March, April 9:00 am 6:00 pm
May, June 9:00 am 7:00 pm
July 9:00 am 8:00 pm
August 9:00 am 7:00 pm
September, October 9:00 am 6:00 pm
November, December 9:00 am 5:00 pm

Closed Thanksgiving Day and Christmas Day

Phone: (423) 337-6616

Your Lost Sea adventure begins with a guided tour of the caverns. This involves a ¾ mile round-trip walk on wide sloping pathways. While touring the caverns and underground lake our guides will tell of the cavern’s exciting and colorful history. They will also explain the fascinating geological development of the immense cavern rooms and rare formations. At the bottom of the cave you will take a boat ride on The Lost Sea, America’s Largest Underground Lake.

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