FO or Furka-Oberalp-Bahn is one of the "big" networks of mountain narrow gauge trains, partly adhesion, partly cog wheel driven. FO is connected to and operates together with RhB, Rhätische Bahn, "the" railroad of the Kanton of Graubünden - the world´s largest narrow gauge train network. As with RhB, FO operates with 1 metre gauge width, with trains that use a third cog wheel rail for the steepest slopes. The FO network itself (not counting RhB and the Furka Bergstrecke railroads) has a total length of 100 km, they use 11 kV, 16,7 Hz AC and the network (earliest parts) were opened for traffic in 1915.

Furka Oberalp Deh 4/4 no. 94 is not classified as a locomotive but as an EMU (it has a small package department). Here it is seen at Andermatt station with train for Göschen, 14. June 1994. The Deh 4/4 is one of the most common locomotives at FO. It was built some time between 1980-84. It weighs 49,5 tons, is 15,5 m long and has a maximum speed of 60 km/h, a speed which is never used on the mountain lines. FO has altogether 6 of these engines plus a further 5 of an earlier but fairly similar series (Deh 4/4 no.51-55) from 1972-75. The line between Göschen (in the valley, by the "big" railroad of SBB´s Gotthard Pass mountain route) climbs extremely steeply up a short strech to the mountain village of Andermatt, high up, where it meets FO´s mountain line. The Göschen-Andermatt trains take also private cars which do not or cannot climb the steep climb.
Photo by Pat & David Othen (dothen@ra.isisnet.com) (5k) Uploaded Nov 22, 1995, text edited by I.S. 22.5.2002.