Hmmm, things must have changed recently. In 2005 I did West to East via the Gunbarrel (Wiluna-Warburton) then to Alice & the Plenty to Boulia without a permit.
A permit must be required from Laverton to Warburton then.
Steve
p,s. A permit was required for the "Old Gunbarrel" route for safety purposes but I didn't go there.

