The Lost Sea
is America's largest underground lake, a registered national landmark,
and is also a Civil War trail marker. You can take a boat ride
underground, experience the beauty of natural formations and learn about
Civil War History all at the same time!
Phone: 423- 337-6616
Website: www.thelostsea.com
Address: 140 Lost Sea Road, Sweetwater
Hours: May-June 9am-7pm, July 9am-8pm, August 9am-7pm
Admission: Adult $16.95, Child (5-12) $7.95, Child (under 4) Free