A lot of excavations took place in the cliffs between Houlgate and Villers-sur-Mer and at Vill027 near Auberville that saw the construction of a series of concrete-lined underground tunnels which were used as barracks by the troops stationed here.
Vill027 is a largely overgrown site with two entrances/exits to the tunnel system now either blocked off or inaccessible to the public for safety reasons. Both entrances were supported by protective machine gun positions – one in a field constructed building and the other a standard Tobruk.
Two observation bunkers stand on top of the tunnel system just a few metres from each other and both are overgrown. In their day they offered a wide, uninterrupted view out to sea and along the cliffs between both towns.