On the Oban line in December 1970, a BRCW Type 2 nears the end of the journey from Glasgow, climbing from Connel Ferry to the summit at Glencruitten. Or at least that is where I think the photo was taken, not having kept an exact record of the location at the time. [The location is just east of the Awe Viaduct, between the viaduct and Crunachy Siding, with thanks to SL, AT and EC.]
Location: Awe Viaduct
Original line: Callander and Oban Railway
Operator: British Railways
Photographer: Robin McGregor
Contact photographer: Robin McGregor
Date: 04/12/1970
Image number: 86507