Nazi Megastructures 1x3
Season 1 · Episode 3
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Overview
This episode describes the immense and impenetrable concrete and steel submarine pens that the Nazis built to protect their precious and deadly U-boats from Allied attacks.
Season 1 · Episode 3
This episode describes the immense and impenetrable concrete and steel submarine pens that the Nazis built to protect their precious and deadly U-boats from Allied attacks.
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