Muttenthalbahn
"Theresia Colliery", what a sonorous name. But first "Zeche Nachtigall" - I'm delighted! That doesn't fit in at all with the hard, dirty miner's business. But imagination and inventive spirit really took hold here. Railroad pioneer Friedrich Harkort himself built the Muttenthalbahn to transport coal with trolleys. I've heard that it's one of the oldest and most important mine railroads of all - isn't it, Alfred?