I have been there and done that, and used the term horrific, which someone disagreed with. It was not locals complaing but tourists in well set up 4WDs. The point being that at prsent it is a stinker and worse than the GRR . of course it could change overnight with some tractor tyres dragged over it.LOL.

The road is very corrugated with large widely spaced and deep corrugations typically from tour buses right through Mabel Downs. I had tyres down to 24PSI front and 35 back and it was not possible in most places to exceed 40-50Kmh without setting up the dreaded resonance.

Then the corrugations diminish closer to the park to be replaced by numerous blind corners, several shallow but cut up river crossings and steep hills.

Once in the park the roads are fine as a worker drags 3 tractor tyres behind a tractor every couple of days.

I have no real problem with it but I must say it is the worst road I have encountered recently except for the William Creek to Halligans Bay road at Lake Eyre.