Grunty Fen has long been a source of mystery. For years it lurked in the dusty lumber-room of memory, unvisited and all but forgotten, its faint miasma lingering slightly, if unpleasantly, until all that was left was the name, only the name. Like Adelstrop, you might think, as immortalized by Edward Thomas; though until recently, all the two places had in common was that once, long ago and for a short time only, each boasted a small, branch-line railway station.