Algeria with public transport
FWIW, Just back from 4 weeks in Algeria using public transport. There was no problem of any kind, even never had to show my passport at the checkpoints. I have to add that my unshaved, tanned look did even mislead locals who thought many times I was a kabylian
Route: Algiers - Oran (train) - Béchar (train) - Taghit (bus) - Adrar (bus) - Timimoun (bus) - Ghardaïa (bus) - Algiers (bus).
Stayed 2 weeks in the Gourara for the Sbou of Timimoun and extensive visit of the region from the Tademaït to the Tinerkouk. Great it was.
Some pictures here
and a short video of the Sbou here