Tunnel-type shelters

Tunnel-type shelters were blown in the solid rock. They were located on the background of bases. Koskela. (1999)

Thickness of the roof is usually several meters. Viikin Latokartano. (1999)

Inside of a tunnel-type shelter is concrete walls and floor. Corrugated plate inner roof has been removed. Pirkkola. (1998)

All land front tunnel-type stores and shelters were listed before second world war for war industry. Some of them were used during the second world war as ammunition magazines and factories. Detail from drawing 1937. Mäkkylä. (Military archive)

Same tunnel-shelter as in the drawning above. Mäkkylä. (2000)


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