To shelter the troops and store ammunition, the Germans built around ten buried structures of SK design with concrete or stone walls 50 cm thick.
These shelters were equipped with wooden doors and provided with a heating system, splinter-proof walls and emergency exits which, in some cases, were used as light and ventilation shafts.
However, none of the shelters have a ventilation system or protection against gases. This is explained by the fact that, to ward off a possible gas attack, each man in the garrison (around ten men on average per shelter) is always in possession of his gas mask.
Only men working in PCs are exempt.
An example of staff shelters: the entrance to semi-buried structure No. 11.
The shelters “guard posts” to the north of the site, and on the west side, on the other side of the road, are the only structures of this type accessible to the public.
The other shelters, partially filled, are located on private land. they are not accessible to the public without authorization.