I've just returned from the Lake District and one of the pubs I visited had the "Tubular Fells" map on the wall. It also had a tube map of the Cumbrian Breweries (as opposed to the Lake District pubs).
Graham
Sorry, been away for a few days.
It's a well-known line in railway history. If the duck was old enough it may have witnessed some iconic locos being put through their paces.