This tunnel could be called the Deane DTC This is Rockhouse Creek tunnel (see below: locals called it “Love’s Branch tunnel”).  It’s rudimentarily faced off, both portals and located near Democrat KY at 37 13′ 45″ N, 82 48′ 55″ W on County road 1048, just off Love’s Creek.  The tunnel is maybe 400′ long, with a curve to the east.  I don’t know what purpose was served by the two horn-like things on the north portal (see comment by Jon Hirsch).