Plate 97 shows the southern opening of Shotlock tunnel in 1938. The 106yd long tunnel was cut through boulder clay and took two years to construct. Stone was used throughout.
(The need for a tunnel at this location can be questioned on examining the shallowness of the hillside through which the tunnel passes.)
Plate 98 is a view from the east of the typical Midland Railway practice of providing surface water drainage from above the tunnel. Similar drainage is provided on the northern portal of the tunnel.