This strongpoint has an underground system with several bunkers. It lies in the dunes at the Noordzeeroute.
Let's go down.
Well known replicas.
Equipped with a stove.
Note the escape features.
Here's the hatch for them.
The eagle looks strong.
The Tobruk lies at the end.
A position for a mortar.
The air controller (Flugwache) had a cupola made of glass.