Perhaps the most famous trail in the world (certainly in the United States), the Appalachian Trail bisects the national park, for most of its length within the park running on the border of Tennessee and North Carolina. Another lesser known, more recently constructed footpath, the Mountains-to-Sea Trail, begins (or ends) at the Clingmans Dome Observation Tower, and runs, as the name suggests, from North Carolina's mountainous border with Tennessee, to the Atlantic Ocean at Cape Hatteras, North Carolina.