Salpa Line
bunker line on the eastern border of Finland
The Salpa Line (Finnish: Salpalinja, literally Latch line; Swedish: Salpalinjen), or its official name, Suomen Salpa (Finland's Latch), is a bunker line on the eastern border of Finland. It was built in 1940–1941 during the Interim Peace between the Winter War and the Continuation War and further in 1944 to defend Finland against a possible Soviet invasion.
The line is 1,200 kilometres long, stretching from the Gulf of Finland to Petsamo (now Pechenga, Russia). It never saw military action because the Soviet offensive in 1944 was stopped at the VKT-line on the Karelian Isthmus. The fortifications of the Salpa Line were significantly more complete and stronger than those of the Mannerheim Line.
Construction
The planning of the Salpa Line was commissioned by general Rudolf Walden and the construction began at the end of the Winter War in 1940. At first, volunteers worked there—then people ineligible for the war service were mobilized. The maximum number of workers, on site was near 35,000 in the spring of 1941. After the beginning of the Continuation War on 25 June 1941 the fortification work was stopped, pillboxes and bunkers were stripped of armaments, which were sent to the front. As the tide of the conflict turned, and the front began to approach the prewar Finnish borders in early 1944, the work on the Salpa Line resumed and continued until the end of the Continuation War on 4 September 1944.
This brief starts where responsible research should: with the source description of “Salpa Line” as bunker line on the eastern border of Finland. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as bunker line on the eastern border of Finland. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 19, 2026. The linked authority identifier is Q164333. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1940, 1941 and 1944.
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This entry incorporates text from “Salpa Line” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.