The Wall at Oued Beht
AFor a long time, the story of early complex societies in Africa has been told mainly through the lens of Egypt. The monuments of the Nile Valley are so famous that they have tended to overshadow developments elsewhere on the continent. North Africa to the west of Egypt, in particular, has often been treated as a region on the edge of the great changes that were taking place around the Mediterranean. Recent discoveries in the hills of north-west Morocco suggest that this picture is in serious need of revision.
BThe site in question, Oued Beht, overlooks the river from which it takes its name. Archaeologists working on the Oued Beht Archaeological Project had already shown that it was home to what is probably the earliest and largest farming complex in Africa outside the Nile Valley, dating from roughly 5,400 to 4,900 years ago. Excavations carried out in 2023, and published in 2026 in the journal Libyan Studies, have now added a new and unexpected chapter to its history. The team uncovered what appears to be the oldest large-scale defensive structure known in North Africa beyond the Nile Valley.
CThe structure is not a single wall but a system built in several phases, combining a ditch, an earth rampart and a wall. It runs across a narrow section of a ridge, between the river on one side and a ravine on the other, cutting off and protecting the southern tip of the ridge. The site had not gone completely unnoticed in modern times. In the 1930s, the French archaeologist Armand Ruhlmann recorded three walls there, with the fourth side guarded by the natural steep slope of the ridge, and he described the place as a 'barred spur', a type of fortified promontory. Radiocarbon dating of deposits associated with the structure now places its construction between about 4,000 and 3,500 years ago. This makes it, in the view of the excavators, the earliest confirmed defensive construction in North Africa outside Egypt.
DLong before the wall was built, however, Oued Beht was already a substantial place. Activity at the site covered at least ten hectares, and its first major phase belongs to the Final Neolithic, in the middle of the fourth millennium and the early third millennium BC. The people who lived there grew barley and wheat, gathered wild plants and kept livestock. They were also skilled craftspeople: excavators have found thousands of polished stone axes, as well as finely made pottery, some of it painted. Even so, the exact nature of the settlement remains uncertain. It may have been a permanent village, a seasonal centre where people gathered at certain times of the year, or something else entirely.
EOver time, the focus of activity shifted. Whereas the earlier community had spread across the larger and more open northern part of the site, later activity concentrated on the narrower southern end of the ridge, which was far easier to defend. The construction of the defences fits this pattern. Exactly what the inhabitants were afraid of, however, is unknown. The researchers are careful not to imagine invading armies. Instead, they suggest that the defences may reflect competition over land and resources, or a wish to control movement through the landscape. This cautious interpretation is worth noting, since it is all too easy to assume that every ancient wall must have been built in response to war.
FThe history of the site does not end in prehistory. Thousands of years later, between the eleventh and thirteenth centuries AD, people returned to Oued Beht. They rebuilt the old defensive structure, established a small hamlet or farm on a nearby hilltop and buried their dead in a cemetery that lay between the two areas. Nothing in the evidence indicates who these medieval settlers were or whether they knew anything of the people who had first fortified the ridge. What is clear is that the location remained attractive to people living there many centuries apart.
GPerhaps the most important implications of the discovery concern North Africa's place in the wider Mediterranean world. The wall dates from the period known in the western Mediterranean as the Bronze Age, and it invites comparison with the Argaric societies of southern Iberia, which flourished between about 2200 and 1550 BC. These societies built fortified settlements on hilltops, worked metal and were marked by clear social hierarchies. Placing Oued Beht alongside such communities allows archaeologists to ask whether the two sides of the western Mediterranean were developing in comparable ways at the same time.
HFor the authors of the study, the answer points in one direction: the Maghreb, the region made up of Morocco, Algeria and Tunisia, was not cut off from the rest of the Mediterranean but connected to its wider networks. If this is correct, accounts of the ancient Mediterranean that move directly from Egypt to the civilisations of the northern shore will need to be rewritten. Many questions remain open, from the purpose of the defences to the character of the people who built them. Yet Oued Beht already shows how much can still be learned from regions that have received relatively little archaeological attention, and how new fieldwork can change the way that the past of an entire region is understood.