In the dictionary of the desert there are 1001 meanings submerged in the dunes of expressions which our Arab culture embraces, of which horses, the night and the wilderness are not the first, and a rocky boulder brought down from above by the flood will not be the last. But the desert, which in the dictionaries of language rests on being synonymous with wide spacious land where water is scarce and plants are rare, has its own expressions in Douz, in the south-west of the Republic of Tunisia, and its even more special explanations.