Ah - looking round my old Nav bag I actually found the map - it was put out by a mob called Kimberly Air Charter - promo material on the back & a heap of senic routes based from Kununarra - see what sorta junk you accumulate over the years.
If the Bungles are accurately moddeled I hope that the western escarpment has the pinnacle that we used to fly between it & the escarpment at low level - completly against the rules when we used to do round Australia safaries in Navajos - great fun for all