Hi Saad,

One big problem: for the desert there are no reliable or affordable GPS maps available :shocked: Paper maps are already hard to get. Best would therefor be to buy a simple GPS to pinpoint your location and to plot that on the map if orientation points are failing.
These GPS systems without electronic maps are way cheaper and better suited for your needs I think ( I did not use a GPS in the deserts of Wadi Rum and the Sinai).

The Gecko from Garmin or the Explorist 100 from Maggelan should be enough for that. They cost around 100E. I'll buy the Explorist next month as this unit is supposed to be more accurate under leafcover and in mist. I only intend to use it in emergencies when I am totally lost.

Cycle the world (with backup GPS),

Whisky