@midwesttravelmama: Did you know you can take a boat ride on the underground lake only an hour from Smoky Mountain National Park? 📍 The Lost Sea Adventure, Sweetwater Tennessee This is one U.S. adventure that you need to add to your bucket list! Mosey through the cave, past spectacular formations, until you reach the Lost Sea. Hop on a boat and take a tour around the underground lake, watching the trout swim around in the darkness. Truly, one of a kind experience! Things to know: 🗓️ Open year round, hours depend on the season 🕒 Tour takes around 1.5 hours 🥾 ¾ mile of walking on a dirt path 👶🏻 Kid friendly 🆓 3 & under free 🔦 Want even more of an adventure? Check out their wild caving experiences! Would you take this tour?