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German Bunker Type 669 Bastion Holland

In defense of the entrance of the Hollands Diep, two German gun casemates of type 669 were built on the old ramparts of Bastion Holland in Willemstad. Willemstad was in World War II part of StŁtzpunktgruppe Ooltgensplaat of the Atlantikwall.
This German bunker is focused on the Volkerak.

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