West portal of Tunnel No. 1636, Knobley Tunnel, milepost 163.57 in Carpendale, West Virginia, looking southeast
Western Maryland Railway, Cumberland Extension, Pearre to North Branch, from WM milepost 125 to 160, Pearre, Washington County, MD
Photo taken for the Historic American Engineering Record
View this photo at lcweb2.loc.gov
BH Photo #321692
It abandoned as a through route in May 1975. It was still used by CSX to reach a customer on the East side of the tunnel until 1995.