RussellV replied:

You could try the servo at Turkey Creek for the Bungles, Mitchell Plateau will be a challenge to find a secure storage area (remember it is a remote area), however you could try one of the local landholders.

Cheers

Coops replied:

I will be heading thru Kimberley as of 25th May and returning to Port Hedland 28th June. I can update you after that if it's not too late for you. Having been to Halls Creek previously I would advise you to forget about expecting security there. You may get away with a night or two though but personally I wouldn't risk it.
Drysdale River Station have an excellent website and you'll find info there (www.drysdaleriver.com.au) regarding leaving campers etc.

Michelle - ExplorOz replied:

Bungles - I've seen lots of vans at the Spring Creek rest area (roadside P bay). It is 2WD accessible and is a large flat area on the banks of the normally dry creek with plenty of shady trees and picnic tables, bins, bbqs etc. It is 1km south of the Bungles turnoff. Try that if you like or the roadhouse at Turkey Creek has a van park out the back where people also leave their vans. It is a very common requirement.
Mitchell Plateau - leave it at Drysdale Station definately. The road is graded from GRR to there but not beyond.