Surveyor Generals Corner

[1] In 1922 an agreement was signed between the prime minister Billy Hughes, the acting premier for South Australia, John George Bice,[3] and the premier of Western Australia, James Mitchell to set the border along the 129th meridian east longitude and defined the boundary by lines drawn north and south through the centre of the Deakin Obelisk, erected in 1926 near Deakin, Western Australia and the Kimberley Obelisk, erected in 1927, near Argyle Downs, in the Kimberley Region of Western Australia.

[1] In 1963, when the survey on the ground was continued, it was realised that there was no possibility of these lines meeting exactly at the 26th parallel south.

[1] In June 1968 two monuments were erected at the junction of the boundaries approximately 127 metres (417 ft) apart running east–west along the 26th parallel south.

The most easterly monument common to all three jurisdictions was named Surveyor Generals Corner at the suggestion of the Director of National Mapping.

[1] On 4th June 1968, two concrete pillars were completed to mark Surveyor-Generals Corner in the presence V.T.

Australia map with named state corners
Surveyor Barry Allwright, who originally surveyed the corner in 1968, returned to Surveyor-Generals Corner in June 2018 to replace the plaque.
A group of surveyors at Surveyor-Generals Corner in June 2018
Surveyor Generals Corner at the intersection of Australian time zones during daylight saving time