The Lost Sea

The Lost Sea is the largest underground lake in North America, located inside an extensive limestone cave system in Tennessee. Formed over thousands of years through natural erosion and mineral deposits, it measures approximately 4 acres in surface area and is about 180 feet below the surface. Visitors can take boat tours across the calm, mysterious waters, surrounded by stunning stalactites and stalagmites. The cave’s unique geography creates a magical setting, offering a glimpse into underground natural formations and the Earth's history, making it a fascinating destination for exploration and education.