I have yet to find any good maps of national parks showing tracks, water holes & the such.
The only ones I have seen were of the parks in Tanzania but were very out of date, although helpful most of the tracks were missing from them.
I know a number of visitors who book guided safaris who like to record their tracks & carry GPS!
I would assume every self driver carries a GPS but without good maps of National Park trails & tracks it is still easy to get lost!
Although your GPS tells you the direction of your camp you have no way to know at a junction which track to take & there may be many tracks!
To follow your GPS footprint back to the camp may take you on along journey in a big loop as you back track your journey.
Even the track that leads in the direction of your camp may not be the best!
It may end in a gully, flood out or take you in a long circle back to where you are!
I know of nothing that would help except perhaps one! Google Earth! 
We are covering a lot of new areas with our next trip, even areas I've been before I know less than 1% of it!
Over the next couple of months I intend to mark Google Earth with way points & direct routes between destinations & then print off a series of pictures that cover the areas we will be visiting.
I will also mark each track junction with the coordinates so if a problem I can check GPS coordinates against Google Earth to ensure I'm at the correct location & then follow each track to it's destination to find the one best for me.
I hope to thus avoid a lot of back tracking! Getting lost! & missing important water holes that are just of the main routes.
Has anyone tried this?
Or know of a better way?
Perhaps there is something already available for GPS?
Your ideas please.
