The northern security position feared an attack by the English on Holland and Denmark and was supposed to be one of the best-preserved defense systems of World War I.
become world war. With 900 bunkers, 33 batteries, trenches, barbed wire, signal stations and a military railway network, it stretches across Sønderjylland, from the Baltic Sea to the North Sea.
After the war the area came back to Denmark and the danish. The military blew up parts of the facility. Despite this, the line of the North Safe Position is still visible with some preserved bunkers and markers in the landscape.
