The 216 meter long Landwasser tunnel, which runs in a curve, ends in a vertically sloping rock face 65 meters high. This is followed by the 136 meter long Landwasser Viaduct, which runs in a radius of 100 meters and at a gradient of 2.0%. The viaduct, made of dark limestone with 6 arches of 20 meters span, was built between May 1901 and October 1902 and opened in July 1903. In 2009, the viaduct was extensively renovated during operation and a concrete trough was built for the tracks. The first class cab car At # 57806 of the Interregio 1148 from St.Moritz to Chur is leaving the tunnel, Ge 4/4 III # 644 is pushing at the end of the train.
