| 1. | During World War II it served as an air raid shelter.
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| 2. | Air raid shelters were built on site as a precautionary measure.
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| 3. | During World War II the tunnel served as air raid shelter.
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| 4. | It is thought that this may be an air raid shelter.
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| 5. | Nobody had an air raid shelter, or a gas mask.
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| 6. | For air raid shelters and threw gasoline and blazing torches on them.
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| 7. | An air raid shelter was built underground just inside St Marks Gate.
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| 8. | Fear of possible Japanese bombing led to air raid shelters being built.
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| 9. | The group trained and rehearsed in an air raid shelter.
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| 10. | On both camps, numerous air raid shelters were constructed.
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