You're guess is as good as mine as to whether these 2 lads are law-breakers up to no good, or law-abiding citizens doing some research on the Dundee to Newtyle railway line - whichever it is, this image of the pair was taken at the bricked up entrance of the Law tunnel, around the Kinghorne Road area, in the early 70's.2 ghost train-spotters possibly?!
