The train from Aberystwyth is just entering the Devil's Bridge station. It squeezes through a narrow gap, topped by a road Bridge (invisible due to steam and smoke). In 1974, the Vale of Rheidol Railway was part of British Railways as can be seen from the logo on the left-hand side of the locomotive.
Uploaded to Flickr by motohakone on 31 August 2017
Photo © motohakone, 31 August 2017. Licensed for reuse under this Creative Commons licence