The beautiful area of Sahel lies on a coastal band from the city of Sousse to Sfax. It is characterized by wide plains, rocky medium-height hills and depressions filled by sabkhas (salty small lakes). But, its main particularity is that it has cleverly used its ground to plant olive trees. The latter were precious resources in antique time since they favoured the development and appearance in this area of many cities or villages and well-equipped ports where Rome and Carthage used to stock up.