Duncraig station was officially closed in 1964, and reopened in 1976.
But, or so it is claimed in a book I read about the West Highland Line, it was only a little bit closed for those twelve years. It didn't appear on the timetable, but in practice trains still stopped there on request.
Have there been any other "closed" stations that you could still use if you were in the know?
Now then, Corby station closed in 1966, reopened in 1987, closed again in 1990, and reopened again in 2009. Are any of the three stations on the same site?