Roane: K-25 Plant Album Knoxville & Mideast TN Image 122/183 Feb 11, 2017 18:15 Original Metadata Camera Model:Canon EOS 50D Original Time Taken:Feb 11, 2017 18:15 Shutter Speed:1/30 sec Aperture:f/4 ISO Sensitivity:1000 Exposure Compensation:-0.33 EV Metering Mode:Pattern Flash Fired:No Flash Focal Length:25 mm Located along the Oak Ridge Turnpike (TN58) west of Oak Ridge. The sign is at a small park with a scenic overlook for the Secret City area.