Belmont Anti-Tank Ditch

Barbed wire fencing and machine gun emplacements were constructed along the entire length of Nine Mile Beach.

The concrete tetrahedrons and vertical timber posts extended in straight lines from within Lake Macquarie to the sea.

Many of the pile driven vertical timber posts or Dumble Tank Stops are still visible; however are slowly succumbing to the elements.

Two concrete tetrahedrons have been relocated to the Ken Lambkin Reserve to form a memorial, and sit on the southern bank of the creek mouth.

The 8th Garrison and 32 Brigade of the Australian Army were responsible for the defence from Adamstown, Dudley, Redhead to Blacksmiths of the southern perimeter defensive system of the Port of Newcastle.