Trig Stations

Trig Stations are permanent survey marks situated at the top of high hills and mountains.

They form part of the Geodetic Survey Network, supported in NSW by Land Property Information.

Some are substantial concrete structures or huge stone cairns supporting a column & disc. Others are simple survey marks embedded in concrete.

Unfortunately all the trigs stations I have seen mounted on stone cairns are dilapidated.

When the Trigs were constructed the area surrounding them was cleared so they could be seen from trigs on nearby hills.

Over time, many of these clearings have been overgrown, in places by almost impenetrable montane heath.

Even though Trigs were builtin high places with locations clearly marked on a map they may be difficult to find.

Where once there would have been excellent views from the Trig there may be no view at all now.

Birds Rock Trig 

Birds Rock Trig is a Trig Station located at Birds Rock beside the Birds Rock Fire Trail. Birds Rock Trig was origininally called Sunnyside Trig...

Boyd Trig 

Boyd Trig is a minor trig station located on the Kanangra Range at The Granites Lookout. Boyd Trig is just under 1 kilometre North East...

Budthingeroo Trig 

Budthingeroo Trig is a minor Trig Station on Mt Budthingeroo on the Boyd Plateau. The disc has fallen. Trees have grown all around the trig,...

Genowlan Trig 

Genowlan Trig is some 3k SSW of Genowlan Mountain, located on the same mesa. Trees have regrown around the Trig but there are excellent views...

Invincible Trig 

Invincible Trig is on the Great Dividing Range, overlooking the Invincible Colliery. There are wonderful views from the top of the pagodas where the Trig...

Jenolan Trig 

Jenolan Trig is a minor trig station located on Mt Guouogang, the highest mountain of the Krungle Bungle Range. There aren't many views from the...

Ophir Trig 

Ophir Trig is a trig station located on Mt Bulga in the Mt Bulga Reserve, approximately 4.3 kilomtres north east of Suma Park Reservoir and...

Plateau Trig 

Plateau Trig is a minor trig station located on Gogy Ridge, just under 500 metres south of Kanangra Pass and about 600 metres west of...

Sawtooth Trig 

Sawtooth Trig is a minor trig station located on Mt Cloudmaker, the highest mountain in the Gangerang Range. The disc lies where it has fallen,...

Stilwell Trig

Stilwell Trig is a minor trig station located at Mt Stilwell on Kangaroo Ridge near Charlottes Pass. Stilwell Trig is just under 1.5 kilometres SSW...

Thurat Trig 

Thurat Trig is a minor Trig Station on Mt Thurat in Thurat Tops. Thurat Trig is a 2 kilometre walk from the Kanangra Road along...

Wolgan Gap Trig 

Wolgan Gap Trig is located on the western escarpment of the Wolgan Valley, just on 1,500 metres N from Wolgan Gap. A short track leads...

Wolgan Trig 

Wolgan Trig is located on Mt Davidson in the Wolgan Capertee Divide between Mt Jamson and Bue Rock Gap. Unforunately the Trig Station has collapsed...