G23 Flakbunker Sleutel

This G23 anti-aircraft weapons bunker is also known as the Sleuterbunker type L410A. Besides this one on Terschelling, only one other similar bunker exists in Den Helder. The bunker’s crew consisted of a commanding officer, 6 other officers and 9 soldiers. Its walls are made of 2-metre thick reinforced concrete and there is an artillery post on top.

The bunker is currently equipped much as it was during the war. The munitions depot contains various ammunition crates and the commanding officer’s quarters are furnished. Guided tours are available on Bunker Day.

other activities in the area

Bertha Bunker

The command bunker 'Bertha' is unique in The Netherlands due to its impressive size.
Read more

Exhibitions Bunker Museum Terschelling

Location: Bunker Museum Terschelling
Read more

G35 Fourier bunker

This ‘Fourier’ bunker is a ‘Bekleidungskammer’ (‘Dressing Room’); a very rare bunker that we rarely come across. This specific type XXL VAR has not yet been found in other defences in the Netherlands. Usually it is being dug open especially for Bunkerdag.
Read more

G41 Officers’ bunker

The first part of this type Küver 467 XL VAR officers’ bunker, was set up and staged in 2018.
Read more
ENG-Terschelling 1 tm 10

other activities in the area

Bertha Bunker

The command bunker 'Bertha' is unique in The Netherlands due to its impressive size.
Read more

Exhibitions Bunker Museum Terschelling

Location: Bunker Museum Terschelling
Read more

G35 Fourier bunker

This ‘Fourier’ bunker is a ‘Bekleidungskammer’ (‘Dressing Room’); a very rare bunker that we rarely come across. This specific type XXL VAR has not yet been found in other defences in the Netherlands. Usually it is being dug open especially for Bunkerdag.
Read more

G41 Officers’ bunker

The first part of this type Küver 467 XL VAR officers’ bunker, was set up and staged in 2018.
Read more

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