Jungfraubahn Vintage Swiss Dog Sledding Postcard. The Jungfrau Railway, the highest railway in Europe and one of the most interesting of all mountain lines, was constructed in 1896-1912 from the designs of Adolph Guyer-Zeller of Zurich. It attains a height of over 11,000 ft., thus bringing the most unathletic into the upper regions of the expert climber. Most of the line is on the rack system (Strub's patent), with overhead trolleys (steepest gradient 1:4), but there is also a short section beyond Eismeer on the ordinary or 'adhesive' system (gradient 1:14). The power is generated in works near Lauterbrunnen and Burglauenen, whence it is transmitted by high-tension lines. The gauge is 3 ft. 4 in. The first section of the line is in the open air, but beyond Eigergletscher it runs through a great tunnel (4-3/4 m. long, 10 ft. high, and 10 ft. wide), piercing the limestone and gneiss rock of the Eiger, Monch, and Jungfrau.
