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Finland has over 40000 bunkers, that can take in 71% of their population. Every building over 600m2 has to have one.

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There are a couple of types of bunkers: K- small bunker for a private house; S1- bunker for a larger house with surrounding terrain; S3- bunker in a mountain or a large facility made from concrete; S6- big bunker hidden in a mountain. These bunkers are checked once in ten years and those that are not suitable for use are suppose to be renovated by the owner.

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But those bigger bunkers are not just laying in wait they are used as swimming pools, basketball courts, for hokey or martial arts and even for skating.

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This can look as these are not shelters anymore but they are always ready to save their true purpose. Think about this playing Fallout 4 that the sad future is not as impossible as it seems.