The Great Desert Tracks Western Sheet covers from beyond Derby in the north to Norseman in the south, and from Halls Creek in the east to Marble Bar in the west. Marked on the mapping are roads and 4WD tracks checked by the Hema Map Patrol, distance markers, topographical relief and touring points of interest including 24-hour fuel, camping areas and caravan parks, facilities, services and more. Also included is information on travelling in the desert, what you need for the trip and relevant contact information.