The Ge4/4 II, one of the colorful electric locomotives operating on the Rhaetian Railway (RhB), first entered service in the 1970s and remains one of the railway's principal locomotive classes today. It can be seen hauling everything from the world-famous Glacier Express to freight trains, and operates across a wide variety of routes, from street-running sections to challenging mountain lines.

This month, we are introducing No. 631, which carries an advertising wrap for the Swiss daily newspaper Südostschweiz, published by Somedia, a media company based in the canton of Graubünden.