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In the hills of northwestern Morocco, excavations at the Oued Beht site have uncovered a defensive structure roughly 4,000 to 3,500 years old. According to a study published in the journal Libyan Studies and reported by ScienceDaily, this wall is the oldest large construction of its kind known in the Maghreb outside the Nile Valley, and it forces a rethinking of the societies of North Africa at the end of prehistory.
A vast prehistoric site in Morocco
The Oued Beht site, named after the river that flows at the foot of the ridge, covers at least ten hectares. For a long time, the recent prehistory of the Maghreb, which includes Morocco, Algeria and Tunisia, was poorly known, as archaeological data were fragmentary compared with those of the Iberian Peninsula or Greece.
Recent work has changed the picture. The first major phases of occupation date to the mid-4th millennium and the early 3rd millennium BCE, at the end of the Neolithic. Plant and animal remains indicate an agricultural community growing barley and wheat, supplemented by gathering and herding.
Stone and pottery craftsmanship
The site was also an important centre of craft production. Archaeologists have recovered thousands of polished stone axes and tools, as well as finely shaped pottery, sometimes decorated with painted motifs.
It remains uncertain whether Oued Beht was a permanent village, a seasonal centre or another type of settlement. In any case, it was a major hub in the landscape of northwestern Morocco.
A wall and ditch discovered in 2023
The presence of earthworks and ancient walls had been noted as early as the 1930s by the French archaeologist Armand Ruhlmann, who described a barred spur protected by three walls, the fourth side being defended by the natural edge of the ridge. Their nature and date, however, remained uncertain.
Excavations carried out in 2023 clarified the existence of a ditch, rampart and wall complex, built in several phases across a narrow section of the ridge, between the river and a ravine. This arrangement isolated and protected the southern tip of the ridge. Radiocarbon dates from associated deposits placed its initial construction in a period comparable to the Bronze Age of the western Mediterranean basin.
What was the fortification for?
Researchers do not know exactly which threats this structure was meant to counter. According to the authors of the study, it likely reflects growing competition for land, resources and control of movement across the landscape, rather than fear of invaders.
Building an embankment and a ditch implies planning and the mobilization of labour, a sign of a community capable of carrying out complex projects. Over time, habitation shifted toward the southern ridge, which was narrower and easier to defend.
Links with the western Mediterranean
The 2nd millennium BCE was a dynamic period in the Mediterranean. In southern Spain, the Argaric culture (c. 2200-1550 BCE) developed fortified settlements, bronze metallurgy and social hierarchies visible in burials.
The Oued Beht discoveries suggest that the communities of northwestern Africa were connected to these wider networks, and that the Maghreb was not isolated. The ridge was even reoccupied in the Middle Ages, between the 11th and 13th centuries CE, with the defensive arrangement rebuilt, a hamlet or farm established on a neighbouring hill, and a cemetery placed between the two.
Rewriting the history of the Maghreb
These discoveries show how much of North Africa's deep history remains to be explored. The wall reveals communities capable of coordinating large-scale works and social transformations that are only just becoming perceptible.
For researchers, Oued Beht is not a settlement from a single period, but a landscape chosen repeatedly by different communities over several millennia. Continued research could make it a key site for understanding the evolution of Maghreb societies, from the first farming communities to the medieval rural world.
Frequently asked questions
Where is the Oued Beht site located?
The Oued Beht site lies in the hills of northwestern Morocco, on a ridge overlooking the river that gives it its name. It covers at least ten hectares and has yielded traces of occupation from the late Neolithic through the Middle Ages.
How old is the Oued Beht defensive wall?
According to the study published in Libyan Studies, the wall dates to roughly 4,000 to 3,500 years ago. It is considered the oldest confirmed defensive construction in North Africa outside Egypt.
Why is this wall important for the history of the Maghreb?
It shows that the societies of the region were more complex and better organized than previously thought, capable of carrying out large collective projects. It also shows that the Maghreb took part in exchanges across the western Mediterranean.
Who conducted the Oued Beht excavations?
The research is led by the Oued Beht archaeological project, whose 2023 work was described in a scientific study. The data presented here come from that publication, as reported by ScienceDaily.
Sources
Original summary written with the help of artificial intelligence from the sources cited, checked automatically, then translated from the French original. Information and quotations belong to their authors. Read the French original.
