This metal pin is another part of the extensive network on anti-landing measures around Greatham Creek.
It was the mounting point for a Spigot Mortar or Blacker Bombard which would have been able to fire a 20lb anti-tank explosive approximately 100 yards, presumably at any invading force on the nearby bridge.
The original bridge which has since been replaced, was itself mined to allow its total destruction
Spigot Mortar – Greatham Creek
