"During the war (WW1) HMS LANCASTER landed a couple of 6-inch guns and mounted them, one at Sapper Hill and the other at Mount Low for local defence purposes.
After several years it was decided to move the gun from Mount Low to Sapper Hill, a distance of some 4 miles across broken ground of soft peat and rock and a passage of about 1 mile by water.
This was done by HMS DURBAN in two visits , 1931-2, by means of primitive sleds and much man-power.
In 1933 HMS DAUNTLESS by the same methods dragged the gun another 4 miles over equally rough ground to a position near Canopus Hut the other side of Port Stanley. From 31st Dec.1936 HMS AJAX commenced work to mount the gun (no.1641) on her emplacement."
(source GRIPPO, A record of the first commission of HMS AJAX, April 1935-August 1937).
It seems one of the guns was moved again as on the photographs they are close together.
During WW2 Falkland Islands guns were: 2-6 inch, 1-4 inch and 2-12 pdrs.
Maybe somebody knows the name of the present spot of the guns.