getting to innamincka

Hi Steve,
It all depends on road conditions at the time.
A 4WD is invaluable in the wet and when the rivers are high.
A high clearance vehicle is a must. The road to Mitchell Plateau is l-o-n-g and guaranteed to be rough but do take the trailer. You will need a GOOD off road trailer or you will be leaving it in pieces on the side of the road. Camp in the Mitchell Plateau camp ground and you can take several days to explore. It is a one hour in and a one hour out walk to the falls from the camp ground.
The actual Gibb River Road can be a dream run if you are lucky enough to be travelling after the grader has been through.
You'll never, never know, until you go!
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Navigator 1

Arkaroola highly recommended- yes fuel available..

Yes all public access route from Yunta. Actually is a very good drive.

All the roads you are planning are well maintained 80kph plus gravel roads.

The answer is Yes, they are PARs. You can certainly get fuel at Arkaroola, but you can also get it at Yunta.

Currently up this way (I live in the Flinders) it is very dry - lots of red dirt and dust if the wind blows, even mildly.

Bruce