Last time I was there several years ago, the road was hard dirt or limestone from memory, at least from the Meekathara end, the roads often get washed out and closed when they have lots of rain, best to check with the local authorities in town or ring Mt Augustus station.
Sorry, I meant the road from Gascoyne Junction. You can turn north from Dairy Creek?, or from Landor?.
We'll check with the local info people when we get to Carnarvon, wondered if anybody had been there just for a personal view. Thank you for the fantastic photo Peter.