Speeder Shed; Location Unknown

Stuffed away in a corner of a photo album, with nothing in common with the surrounding photos, I found these two of some speeder shed. I have no idea where it was located. And there's no date stamp on the back, but my guess is that it was taken during the summer of 1975.

You can see there're buildings in the background of both pictures. They might provide clues as to location.

Back in '75 I can only assume that I thought I would never forget where I took these, and it didn't cross my mind that 45 years in the future I might not remember - I could barely look beyond when my next math test would occur :-) My usual train haunts were Hastings, Havelock, and Marmora, so I assume it was located somewhere in that rather large area.