The RhB Ge4/4^III 649 Lavin heavy duty electric locomotive wearing the advertising livery of the cement company Holcim

These 60-ton locomotives built between 1993 and 1999 are generally used for heavy passenger duty, though they have passed over the Bernina-Express to the even more powerful multi-system Allegra railcars. They almost never pull freight trains though so you can hardly photograph this locomotive together with silo cars.