Cutting a brown swath through the scorched heart of the Kimberley, the legendary Gibb River Road ('the Gibb' or GRR) provides one of Australia's wildest outback experiences. Stretching some 660km between Derby and Kununurra, the largely unpaved road is an endless sea of red dirt, big open skies and dramatic terrain. Rough, sometimes deeply corrugated side roads lead to remote gorges, shady pools, distant waterfalls and million-acre cattle stations. Rain can close the road any time, and it's permanently closed during the Wet. This is true wilderness with minimal services, so good planning and self-sufficiency are vital.
A high-clearance 4WD (eg Toyota Land Cruiser) is mandatory, with two spare tyres, tools, emergency water (20L minimum) and several days' food in case of breakdown. Britz in Broome is a reputable hire outfit. Fuel is limited and expensive, most mobile phones won't work, and temperatures can be life-threatening.