Big Bull tunnel

There are three tunnels on the Norfolk and Southern line between St. Paul northwestward to Coeburn.  They’re all old tunnels and faced and dated at time of construction. This is Big Bull tunnel, centered at 36.917577, -82.359635.  It’s about 1,500′ long.  Date’s 1904. I particularly like how these tunnels were finished up.  Nice stonework.