Like a small red worm, the train of the Rhaetian Railway is following the 1 meter gauge track through the alpine landscape from Ospizio Bernina towards Alp Grüm, then it will follow the 7.0 % grade further down through the loops to Cavaglia, Poschiavo and Brusio till Tirano/Italy, which is in the fog and smog in the background of the Poschiavo valley.