Inter Regio 1152 of the Rhaetian Railway from St.Moritz over the UNESCO world heritage Albula line to Chur, is crossing the 65 meter high and 136 meter long Landwasser viaduct, landmark of the line, between Filisur and Alvaneu. Leading is first class cab car At # 57803, followed by the permanently coupled 6-car ALVRA trainset, the blue GOURMINO dining car WR # 3812, a second class standard car type II as reinforcement and locomotive Ge 4/4 III # 647 "Grüsch" shoving in the rear. The RhB dining cars, which date from the 1930s and have been rebuilt and modernized several times, had to be specially equipped for use in these long push-pull trains on the Albula line.