“Unnamed #5” was an access road to the original Galloway Mill in Sullivan County TN. The mill is a goner, but the dam and part of the mill race are extant. You can go to Google Earth and find it at 872 Old Beaver Creek Rd, 37618 Bluff City, United States.
The building on site now is, or was, Galloway Mills. The business didn’t look like it was active, but all listings I found on the web seem to indicate it is.