rack-and-pinion system both for ascending steep grades and to control descent. History Early years The completion of the final portion of the FO in 1926 opened up the Cantons of Valais and Graubünden to further tourist development. In particular, a pathway was laid for the introduction of Kurswagen (through coaches) between Brig and Chur, and between Brig and St. Moritz. In early June 1930, the then Visp–Zermatt Bahn was extended to Brig by the opening of a metre gauge line along the Rhone Valley between Visp and Brig. For the first time, it was feasible to operate through coaches all the way from Zermatt to St. Moritz and return. On , the first train of such coaches set out from Zermatt to St. Moritz, under the name Glacier Express. The new train's name honoured the Rhone Glacier, which is near Gletsch, on the Furka Pass. Until 1982, the Glacier Express operated only in the summer months, because the Furka Pass and the Oberalp Pass were both snowed over in winter. Initially, the train was made up of first to third class salon and passenger coaches, supplied by all three of the participating railway companies. Between Chur and Disentis/Mustér, passengers could enjoy a hot lunch in a Mitropa dining car. From 1933, the Glacier Express through coaches were attached to normal passenger trains between Brig and Zermatt. In the earliest years of the Glacier Express, electric locomotives were used to haul the Glacier Express on the BVZ and the RhB, but steam locomotives were used on the FO. That changed in 1941-1942, when overhead catenary was installed on the FO, enabling completely electric operation for the full length of the route. However, no through trains were operated between 1943 and 1946, due to World War II. Upon the resumption of daily through trains in 1948, the dining car service was extended from Disentis/Mustér to the top of the Oberalp Pass. Between the 1950s and the 1970s, both the BVZ and the RhB introduced new locomotive classes that, when attached to the Glacier Express, enabled reductions in schedule times. Meanwhile, the dining car service was extended further, to Andermatt. Year-round operations In 1981, a Glacier Express era came to an end with the final closure for the winter of the FO line over the Furka Pass and through the Furka Summit Tunnel, between Oberwald, Gletsch and Realp. In June 1982, that FO