See vicinity map below. Your GPS may give you better directions; these are the simplest. But warning - the GPS might take you to Roberts ROAD and you need to go to Roberts LANE.
Directions from Chattanooga, TN:
US Hwy 27N to Dayton, TN
Left onto TN Hwy 30W
Right onto Summer City Rd
Right onto Kerley Rd
Left at 3-way fork onto Roberts Ln
Check in at 230 Roberts Ln on left
Directions from Knoxville, TN:
I-40W to Rockwood/Harriman Exit, left onto US Hwy 27S
US Hwy 27S to Spring City, TN
Right onto Front Street at first light in Spring City
Right onto W Jackson Street
Left onto US Hwy 68E
Right onto Shut In Gap Road; go to top of Cumberland Plateau
Left onto Kerley Rd
Left at 3-way fork onto Roberts Ln
Check in at 230 Roberts Ln on left
Directions from Crossville, TN:
US 127S to Lowes Gap Rd at bottom of plateau
Left onto Lowes Gap Rd; go to top of Cumberland Plateau
At 4-way, straight across onto Kerley Rd
Left at 3-way fork onto Roberts Ln
Check in at 230 Roberts Ln on left