No takers for nearly 36 hours Ill have another bash.
Which deeply-rural public line in Great Britain was first planned to be on an unusual narrow gauge; but was in the event opened in mid-to-late 19th century, as an independent standard-gauge line; saw lean years -- culminating in passenger service, then freight too, being withdrawn; was reopened a few years later, under operation by a larger company; taken into one of the Big Four companies at Grouping; passenger service withdrawn in 1931, and final abandonment came in the very early years of British Railways?