Editing Triangulation station (section)

===Australia===
In the 1820s, much of New South Wales was unsurveyed territory to the European arrivals. To aid the mapping of the country, the science of trigonometic surveying was introduced by Major Thomas Mitchell who had been brought out to the colony as Assistant Surveyor General of New South Wales. The freestanding peak of [[Mount Jellore]] was selected as the first trigonometric summit for his triangulation survey of the countryside. In 1828 Mitchell headed south from Sydney with a small party and camped at the base of the basalt, making daily excursions to the top. While his convict crew cleared the summit of trees, Mitchell plotted and measured distant peaks and sketched the skyline.

A national geodetic survey and adjustment carried out in the early 1970s in Australia has left a legacy of trig stations, many consisting of a ground mark with a black quadripod (pyramid frame) supporting a visible disc above the ground mark.<ref>{{Cite web |title=Frequently Asked Questions Maps And Mapping |url=https://www.usgs.gov/faqs/how-can-i-find-survey-benchmark-and-triangulation-station-information |website=USGS.gov}}</ref>

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Jellore_trig_plaque.jpg|Australia's first trig
Trigonometrical Station on Mt Gibraltar, NSW, Australia.jpg|Trigonometrical station, NSW, Australia
Trig point atop Mount Wellington, Tasmania.jpg|Trig point atop Mount Wellington, Tasmania
</gallery>