Ge 4/4 II # 623, in the matching publicity paint scheme, pulls train PE 904 GLACIER EXPRESS Zermatt-St.Moritz on the lap from Chur to St.Moritz, between Reichenau-Tamins and Bonaduz. Before, the locomotive was in charge with train PE 902 from Disentis/Mustér to Chur, see picture https://www.railpictures.net/photo/836156/