Once upon a time in the desert

I am not sure if I have alread post this photo here. Despite this doubt, I am now showing to you this picture I took in Tunisia. As anybody knows, Tunisia is a country in North Africa and most of its territory is in the Sahara.
The photo shows the Chott El-Jherid, a salt lake in the middle of the country. A great deal of it is now dry. But they continue to sell its salt to France and other europeans countries.

This place in the picture is in the half way from Douz to Tozeur. The highway cross the desert and we see some tuaregues with their camels.