Group Shelter 1918 I Spaarndam

The Dutch group shelters, part of the Stelling van Amsterdam (Defence Line of Amsterdam, which is a UNESCO World Heritage Site), were designed as a shelter by shelling and bombing, if the trenches between the shelters did not give not enough coverage.

The bunkers were built during World War I. There were several different types; these are 1918 I (mirrored to each other). The shelters were built as an extra defense line between both forts in Spaarndam.

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