My traveling buddy, Lee Stone, was exploring the area around Welch WV and kindly took the time to shoot some of the tunnels in the area.  On Google Earth, go to Antler WVA. The tunnel is just to the left of that location. It was built around 1905.  In the late 2000s, it was part of the Heartland Corridor Clearance Project to raise the clearances in 28 tunnels on the line.