In reply to Offwidth:
It is our local line, Cynghordy station just over the hill.
Anyone with a (Welsh) bus pass has free travel on the line for 6 months of the year from October - March, we make use of it as do many other "oldies". In fact during those winter months the carriage is full of pensioners having a day out to some remote village for a pub lunch, stroll about and home again!
My wife and friend started walking the trail in the spring utilising the railway, they have really enjoyed it and will be starting again soon once they are less busy. I am planning to do it myself from October onwards, a good day out.
The sugar loaf station was the least used station in UK (you would see why if you stopped there), now loads of people visit it to collect a ticket showing they have been there - which is kind of self defeating .