OB 2cm Flak is a military bunker located in Norway, near the Arctic town of Tromsø. Built during the Cold War, this bunker was part of Norway's extensive coastal defense network, designed to protect against potential Soviet naval and aerial threats. The site housed anti-aircraft artillery, specifically 2cm flak guns, to defend against enemy aircraft.
Norway's strategic location bordering the USSR made such installations critical during the heightened tensions of the Cold War era. Today, the bunker stands as a reminder of Norway's military preparedness during this period.