Live

Watch CBSN Live

Exploring America's largest underground lake

Deep in the foothills of the Smoky Mountains, about 50 miles south of Knoxville, Tennessee, sits an wonder 140 feet below ground: the largest underground lake in America. The lake, which was discovered only decades ago, attracts about 2,000 visitors a day from all over the world. Chip Reid reports.
View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.