Hidden Bunker (Northland) Traditional Cache

Coastal fortifications were constructed in New Zealand during World War II and was due to fears of invasion by the Japanese.

The fortifications were built from British designs adapted to New Zealand conditions. These installations typically included gun emplacements, pill boxes, fire control or observation posts, camouflage strategies, underground bunkers, sometimes with interconnected tunnels, containing magazines, supply and plotting rooms and protected engine rooms supplying power to the gun turrets and searchlights.