South Africa has an excellent range of detailed 'Ordnance Survey' type maps available cheaply in South Africa at most book stores and news agencies. Petrol station usually stock some good maps as well. If you are planning a 4WD expedition, then you may need to buy some of these before you head out into the bush.

GPS systems

If you are heading into the more remote parts in your own vehicle, then consider investing in a small GPS: a Global Positioning System.