The Australian Army took over occupation of the Hill 60 area and the Aboriginal people living there were forcibly removed from the land and were never permitted to return to the Hill.[1]

Two large gun emplacements were constructed, housing BL 6 inch Mk XI guns and their shields held in storage from the decommissioned World War I cruisers HMAS Brisbane, Sydney and Melbourne. Two large tunnels were built and are steep in descent and have a small gauge tramway used for hauling shells to the guns located at the 2 gun emplacements.

A concrete bunker is connected to the underground tunnel system.