On this visit to the Mannerheim Line we explore bunker no. 28. The Mannerheim Line was a defensive fortification line on the Karelian Isthmus built by Finland against the Soviet Union. During the Winter War it became known as the Mannerheim Line, after Field Marshal Baron Carl Gustaf Emil Mannerheim. The line was constructed in two phases: 1920–1924 and 1932–1939. By November 1939, when the Winter War began, the line was by no means complete. | Abandoned Spaces

On #ThisDayinHistory 1918, after a 56-hour-long bombardment, Allied forces breach the so-called Hindenburg Line, the last line of German defenses on the Western Front during World War I. | HISTORY

Film footage of the abandoned bunker (SK2) on the Mannerheim line which was stormed by the Soviets in -30 conditions during WW2. | Abandoned Spaces