Calling all daredevils! The world's first cable-to-rail zipline roller coaster has opened in Pigeon Forge, Tennessee, right in the heart of the Smoky Mountains. The "Flying Ox" takes you on a 1,000-foot ride 80 feet in the air, and you won't just go in a straight line -- you'll drop and soar through the air around 15 miles an hour. The ride is part of Paula Deen's Lumberjack Feud Show & Adventure Park, featuring other activities like the High Woodsman Challenge, Timber Towers and Loggersports.