The Kimberley occupies the remote northwest corner of Western Australia — a region the size of California with a population of around 40,000 people. It is one of the most geologically ancient landscapes on earth: the eroded remnants of a billion-year-old plateau, carved by rivers, cracked by heat, and shaped into gorges, ranges, and floodplains that look like nothing else on the continent. In the wet season (November to March) the rivers flood the valleys and the land goes green; in the dry (April to October) the red rock reasserts itself and the waterholes shrink, concentrating wildlife around the remaining water.
The Kimberley's main draws are its gorge country and its sheer remoteness. The Gibb River Road runs 660 km through the heart of the region from Derby to Kununurra, passing through cattle stations and stopping points where gorges, waterfalls, and swimming holes are a short walk from the road. It is only fully accessible in a 4WD, and this self-filtering condition keeps it appropriately wild. At the eastern end, the Purnululu National Park (the Bungle Bungles) is the region's most famous sight: orange and black striped sandstone domes that rise improbably from the flat surrounding country, a World Heritage Site since 2003.
Broome is the coastal gateway and the most comfortable base — a town of 16,000 with good infrastructure, excellent Cable Beach, and a multicultural history rooted in its former pearling industry. Kununurra in the east provides access to the Bungle Bungles and Lake Argyle. Between them, the scale of the empty country — red savannah, boab trees, eagles overhead — is part of what people come for.
Getting to the Kimberley means either flying to Broome or Kununurra, or driving from Perth (around 2,000 km to Broome). The Gibb River Road is only accessible to conventional vehicles in the dry season on its better sections, and 4WD is required for the more remote tracks. The wet season can be spectacular — the rivers run and the waterfalls are at their best — but many roads close and access is severely limited. Timing a trip for May through September is the sensible choice.