Soultz-Haut-Rhin_Railway
The Soultz-Haut-Rhin Railway (German Sulzerbahn) was a 9.8 km (6.1 mi) long military light railway with a track gauge of 600 mm (1 ft 11+5⁄8 in) that the Germans built and operated during World War I from Soultz-Haut-Rhin to the Niederwald terminus below the Hartmannswillerkopf near Wattwiller in Alsace.