As the age of steam engines draws to a close, the Darjeeling Hill Railways’ fan club grows bigger, with chapters in Wales, the US and Canada. In Tindharia town is the almost pre-industrial workshop where the trains, with names like Mountaineer, Green Hills and Meghdoot, are given life-saving surgery to keep them going. All were built between 1892 and 1925 in some long forgotten Glasgow factory. Plans to change the two-feet-wide gauge—possibly the narrowest in the world—to a wider track have been scrapped time and again. With the train having been declared a UN World Heritage object, further attempts to alter its historic character should end.