For an extended duration, our endeavors have focused on the systematic remote sensing investigation of the extensive arid expanses in Eastern Sudan.
This initiative entailed the meticulous examination of satellite imagery to comprehensively identify archaeological remnants within the Atbai Desert of Eastern Sudan, a segment of the considerably larger Sahara region.
Our collaborative team—comprising archaeologists from Macquarie University, the French HiSoMA research unit, and the Polish Academy of Sciences—endeavored to elucidate the historical narrative of this desert locale situated between the Nile River and the Red Sea, circumventing the necessity for extensive excavation.
A singular, enigmatic archaeological feature captured our attention. We consistently encountered substantial, circular collective burial sites replete with the skeletal remains of both humans and animals, frequently meticulously arranged around a central, significant individual.
Likely constructed during the fourth and third millennia BCE, these “enclosure burial” monuments are characterized by a prominent circular perimeter wall, with some structures spanning up to 80 meters in diameter, containing the interred remains of humans alongside their domesticated cattle, sheep, and goats.
Our recent investigation, documented in the journal African Archaeological Review, delineates our methodology for uncovering 260 previously unrecorded enclosure burials situated to the east of the Nile River, spanning an area of nearly 1,000 kilometers of desert terrain.
Who erected them?
These large, circular funerary structures, previously known only from a limited number of excavated examples in the Egyptian and Sudanese deserts, have long presented a puzzle to scholars.
What once appeared to be isolated occurrences now manifests as a pervasive pattern, strongly suggesting the existence of a shared nomadic culture that extended across a considerable desert expanse.
The majority of these sites are located within contemporary Sudan’s borders, along the foothills of the Red Sea Hills. Regrettably, satellite imagery alone cannot fully illuminate the societal complexities of the individuals who constructed these burial enclosures.
Radiocarbon dating and pottery analysis from the scantily excavated monuments indicate that these populations flourished approximately between 4000 and 3000 BCE, preceding the consolidation of the territorial kingdom of Pharaonic Egypt.
However, these “enclosure burial” nomads exhibited minimal affiliation with the urbanized and agrarian societies of Egypt.
These were, in essence, Saharan desert dwellers whose way of life was intrinsically tied to pastoralism and nomadic existence.
The Emergence of a New Elite?
Certain enclosure sites reveal “secondary” interments positioned around a “primary” burial of an individual at the core—potentially a chieftain or another prominent community member.
This data is invaluable for archaeologists seeking to comprehend social stratification and hierarchical structures within prehistoric societies.
The question of when Saharan nomads began to transition away from egalitarianism has preoccupied archaeologists for decades. The prevailing consensus points to the fourth millennium BCE as the period when a distinct “elite” stratum started to materialize.
This development, while a significant departure from absolute equality, falls considerably short of the profound disparities observed in societies like Egypt, characterized by its stark divisions between rulers and the populace. Nevertheless, it signifies the nascent indications of social inequality.
Animals Held in High Regard
Cattle appear to have held considerable significance for these prehistoric nomadic groups, a hypothesis further substantiated by ancient rock art found locally in the region.
The practice of interring their livestock alongside their human populace underscores the elevated status afforded to their animals.
Millennia later, subsequent nomadic populations chose to reappropriate these now-ancient enclosures as their own burial grounds, in some instances nearly 4,000 years after their initial construction.
This demonstrates that these prehistoric nomads established sacred burial spaces that retained their significance for thousands of years.
The Fate of These Populations
The ultimate destiny of these communities remains a subject of conjecture.
The limited chronological data derived from these monuments clusters between 4000–3000 BCE, marking the latter stages of a period when the once-lush Sahara began its desiccation, a phenomenon scientists refer to as the “African Humid Period.”
The gradual recession of the summer monsoon across the continent led to diminished rainfall and a contraction of grazing lands. This environmental shift compelled nomadic groups to relinquish their cattle, increase the mobility of their herds, migrate southward, or seek refuge near the Nile.
The overwhelming concentration of these monuments near sources of water, such as pools in valley floors, ancient lakebeds, and ephemeral river channels, provides crucial context.
This geographical distribution indicates that even during the period of monument construction, the desert environment was already presenting considerable environmental challenges and arid conditions.
As the aridification progressed, transforming verdant landscapes into sandy and rocky terrains, the sustenance of large cattle herds became increasingly untenable.
Maintaining substantial cattle populations in this desert environment during this epoch may have served as a potent symbol of wealth and status, akin to possessing a luxury automobile in modern times. This perception could elucidate the practice of interring cattle alongside their owners within enclosure burial structures.
A Broader Historical Context
These enclosure burials represent but a single facet of the larger narrative of human adaptation to climatic shifts across North Africa.
From the Central Sahara, to Kenya, and Arabia, the management of cattle, goats, and sheep profoundly reshaped societal structures, influencing dietary habits, patterns of mobility, and community hierarchies.
It is not coincidental that communities underwent transformations in their burial customs concurrently with their adoption of pastoralist lifestyles.
These burial enclosures serve as tangible evidence that even dispersed nomadic groups were highly organized and exceptionally adaptable populations.
Our discovery fundamentally revises the historical understanding of the Sahara deserts and the prehistoric era of the Nile Valley.
They offer a foundational narrative preceding the monumental architecture of the Egyptian and Nubian kingdoms, presenting a more nuanced perspective of the region beyond its famed pharaohs, pyramids, and temples.
Regrettably, a significant number of these enclosure monuments are presently facing destruction or desecration due to unregulated mining activities in the area. These unique burial sites, which have endured for millennia, are now vulnerable to obliteration within a mere week.
Maria Gatto of the Polish Academy of Sciences was a co-author of our published paper. We wish to extend our gratitude to Alexander Carter, Tung Cheung, Kahn Emerson, Jessica Larkin, Stuart Hamilton, and Ethan Simpson from Macquarie University for their valuable contributions. Appreciation is also due to the National Corporation of Antiquities and Museums (Sudan).
