MGB Mountain engine HGe 4/4 II with a Glacier Express
passing the little City of Rueras. At left, not far away is the pass of Oberalp. This line is cogwheel land in some very steep grades, down to the City of Disentis, the cogwheel is necessary only on parts of the line.
At Disentis, the engine is changed, a RHB locomotive will turn over the service to further journey.