A military bunker site located in northern Norway, near the town of Narvik. The designation 'OB 21cm Mörser 18' refers to a type of German heavy artillery bunker (Oberbefehlshaber der Wehrmacht, 21 cm Mörser 18) from the World War II period. During the German occupation of Norway (1940-1945), such fortified positions were constructed to control key coastal and inland routes.
The specific historical role and current condition of this particular site are not detailed in the available sources. The region has a significant military history, including the Battles of Narvik in 1940 and later Cold War fortifications due to Norway's strategic proximity to the Soviet Union.