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Secret Nazi Bases - Series 4: Episode 4 | Channel 4
As Allied bombing raids escalate, a concrete dome rises from the French countryside.
↗ https://www.channel4.com/programmes/secret-nazi-bases/on-demand/79570-004As Allied bombing raids escalate, a concrete dome rises from the French countryside.
↗ https://www.channel4.com/programmes/secret-nazi-bases/on-demand/79570-004