❌ Don’t miss this! Tucked in the small Eastern Tennessee town of Sweetwater lies the largest underground lake in North America 😱 📍The Lost Sea To visit, purchase your tickets online and take a tour through the Craighead Caverns. Once you descend to the lake, you’ll be taken on a short boat ride across the lake! As you putter around the lake, you’ll get to see unique cave formations and lots of fish swimming beside the boat. If you’re lucky, your guide might even feed the fish while you’re on t