To join up with the left of Rimington’s line, Lieutenant-Colonel Cox’s 3^rd New South Wales Mounted Rifles, they had to stretch their line so as to reach up a kloof leading to the farm Mooifontein and Rimington’s line which was north of the Holspruit. At the head of the kloof, Captain A.R.G. Begbie of the Royal Garrison Artillery placed a pom pom gun in a small redoubt of stones that they quickly erected.