Tunnels! Tunnels!
The top three photos are of the tunnel on the West Virginia Secondary Line (NS) at Moxahala (OH). The top photo shows the NS line looking down on from the top of the tunnel, reached after a 15-minute hike across the land of a nice farmer who actually escorted us through the greenbrier, blackberry bushes, old pasture and hillsides to show us. Very nice of him!
The second photo shows the air exhaust for the tunnel and the third shows the well worn face of the Moxahal tunnel. If you go to look at this tunnel, be sure to ask permission before hiking to the tunnel. I doubt you would find it anyway on your own.
The bottom tunnel is the famous (at least locally) Moonville tunnel. The B&O main from Parkesburg, WV, Athens, Cincinnati to St. Louis used to go through here. Now it is just a hiking trail near Lake Hope State Park. It is an easier walk to get to, just watch out for the poision ivy!