The line is 9,339 meter or 30,640 ft in length, including 3,790 meter or 12,434 ft of double track, and traverses an altitude difference of 1,469 meter or 4,820 ft. It is built to meter gauge (3 ft 3 3/8 in) and uses the Abt rack system throughout. It is one of four lines in the world using three-phase electric power, requiring two overhead conductors, with the track forming the third conductor. [First Image credit trent roche