 This time, a single hairpin turn takes it into the wide Thompson Valley, where it passes the community of Thompson Valley.A gap between Knob Mountain and Rich Mountain leads to U.S. Route 19/460 Business at Frog Level, just east of the north end of State Route 91.SR 16 turns northeast along US 19/460 Business into Tazewell, meeting the State Route 16 Alternate (Fairground Road) shortcut along the way.