Here's a day out for you, based on old notes of one such, some seventy five years ago.
A 400 class takes you to Cork, first of all; and you're sitting in a "new steel" coach (= Bredin type). Walk from Glanmire Road across to Albert Street for a look; it's several years since the Passage line closed now, and the track hasn't been long lifted. Cross the street for a look into Albert Quay, but that's routine stuff. Been on the West Cork before, will do it again. Time to walk to Capwell before returning to Albert Quay.
A quick look round there, but no time to how to Western Road today, as we have an appointment back in Albert Quay. As we await, a quick look up into the Waterford-style "overhead" signal box.
Now, it's time. Up into the cab of a 2.4.2 tank of GSWR ancestry, for a spin out to Macroom with empty cattle wagons. These are to be left out there for the next fair. Footplate jaunt to Macroom, dump the wagons and back in the guard's van - an ancient wooden GSWR one.
Back to Dublin that night in an old wooden GSWR first class coach, with a different 400 up front. Departed Glanmire right on time, arrived at Kingsbridge about a minute early.
And they didn't pass a solitary ICR en route......
Some years later, the Macroom line closed, and the route of it is now partly flooded by a reservoir.