From 1987 to 1990, in collaboration with several Danish research institutes, the Tunisian Institut National de Patrimonie carried out an extensive archaeological survey in the valley known as the Segermes basis, in Tunisia. The results of that work are contained in three volumes entitled Africa Proconsularis . This volume reviews the information and looks at the historical conclusions. The objective of this encyclopedia work is to reveal the economic mechanisms and social relations between a town and its environs in antiquity. It begins with an exploration of the pioneering work of area around Segermes. Information from later archaeological expeditions is included.