Steaming out of Zurich

Switzerland has an awful lot of trains. From the world&#x27;s longest rail tunnel, [?] to the world&#x27;s longest passenger train, [?] trains are everywhere. It&#x27;s almost as bad as the infestation on the Island of Sodor. A steam train periodically runs from Zurich up the Sihl valley and back. It runs on the last Sunday of the month from April to October, with a special train on the first…