Any final guesses on yesterday’s mystery photo?

See: Tracking the Light’s Mystery Photo! Do you know this place??

Thus far I’ve had a variety of spirited attempted guesses, but so far no one has come close to the correct answer! (Except Pop.)

Certainly the Mass-Central is a good guess, but which, if any, of the crossings on the Mass-Central have I failed to expose a photo of a train in the last 35 years?

Here’s a final clue: the line pictured was once part of a long-forgotten railroad empire.

Also another version of the photo:

I’ll reveal the location Friday evening or Saturday morning! Plenty of the time for more guesses.