 Here, the trail crosses Mount Chapman and Mount Guyot, and passes one of its most remote shelters at Tricorner Knob before gradually descending.Just beyond Mount Cammerer, the A.T. exits the Smokies, crossing Interstate 40 into the Cherokee National Forest.After traversing Snowbird Mountain, Max Patch Bald, and Lemon Gap (just south of Del Rio), the trail exits Tennessee atop Bluff Mountain and re-enters again atop Rich Mountain (in Greene County), some to the northeast.