In 2008, helmet grass was planted at the exhibition bunker after the blocks had been fitted with tank barriers.
Furthermore, the ‘old’ fire control post was refitted and the corridors to the ‘old’ control post were strengthened.
Lighting was installed in the lower floor of the fire control post S414.
In the winter months while the corridors are closed for the wintering of the bats, the fire control post (S414) has been refurbished.
In April a number of meters of narrow-gauge railway, made available by the Stoomtrein Valkenburgse Meer foundation, was installed at the fire control post in the corridor.
In 2006, access from the cycle path to the entrance to the bunkers in the dunes was completed.
In 2005, an entrance to the tunnel system was built and a door was placed in it. The volunteers have continued to remove sand. The fire control post S414 and the adjacent ‘old’ fire control post are made free of sand. This ‘old’ fire control post was in use before the large S414 fire control post was put into use in 1943.