The themes of sedentarisation, urbanisation and state formation are fundamental ones in the archaeology of many diverse parts of the world but have been little explored in relation to early societies of the Saharan zone. Moreover, the possibility has rarely been considered that the precocious civilisations bordering this vast desert were interconnected by long-range contacts and knowledge networks. The orthodox opinion of many of the key oasis zones within the Sahara is that they were not created before the early medieval period and the Islamic conquest of Mediterranean North Africa. Major claims of this volume are that the ultimate origins of oasis settlements in many parts of the Sahara were considerably earlier, that by the first millennium AD some of these oasis settlements were of a size and complexity to merit the categorisation 'towns' and that a few exceptional examples were focal centres within proto-states or early state-level societies.

The frontiers of the Roman empire together form the largest monument of one of the world's greatest states. They stretch for some 7,500km through 20 countries which encircle the Mediterranean Sea. The remains of these frontiers have been studied by visitors and later by archaeologists for several centuries. Many of the inscriptions and sculpture, weapons, pottery and artefacts created and used by the soldiers and civilians who lived on the frontier can be seen in museums. Equally evocative of the lost might of Rome are the physical remains of the frontiers themselves. The aim of this series of books is not only to inform the interested visitor about the history of the frontiers but to act as a guidebook as well. The Roman military remains in North Africa are remarkable in their variety and in their state of preservation: they deserve to be better known. They include towers and forts, stretches of defensive lines of stone and earth with ditches broken by gates, and roads, sitting in the most amazing scenery. It is hoped that each reader of this book will enjoy learning more about North Africa's remarkable Roman inheritance.