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The entrance - one of four
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Discussion
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Steel door
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Ideal growing conditions for ferns - wet and dark!
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Graffiti in sandstone
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Graffiti c.1959
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Air supply fan
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A Main Tunnel - one of four
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Ancient computers
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The kitchen
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Ovens
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Toilets
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Cave art!
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Fungus? - not cave art!
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More of it
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1980s air supply system
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Communications Room
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Communications Room
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Another Main Tunnel
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Electricity supply
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Generator - working
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Canteen
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Counter
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Tannoy
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Sid, our guide, explains all