Last Updated on July 26, 2026 by Staff
Archaeologists have uncovered one of the important historical discoveries in Angola while racing against time to save an ancient settlement before it disappeared beneath the waters of a hydroelectric dam reservoir.
The excavation at Caculo Cabaça, located in Angola revealed the country’s oldest dated burials, its earliest known stone buildings and an extremely rare cremation burial unlike anything previously found in Angolan archaeology. The findings, published in the Journal of Field Archaeology offer insights into the lives, traditions and social structures of communities that lived in the region during the 15th century.
Because much of the site was destined to be submerged after the completion of a hydroelectric project researchers prioritized excavating the most vulnerable areas before they vanished forever.
The discoveries now provide evidence of Angola’s rich pre-colonial history much of which remains poorly documented.
Hidden Settlement
Stone structures have long been scattered across Angola. Until now none had been reliably dated to before the 16th century.
This raised a historical question. Did local communities independently develop stone construction techniques? Were such buildings introduced through outside influences after European contact?
The answer began to emerge in 2023 when construction workers unexpectedly discovered stone ruins while preparing land for the dam project.
Before excavations could begin however researchers faced challenges.
The area first had to be cleared of landmines left behind from Angola’s decades- civil war. Once the site was declared safe, local traditional leaders known as Sobas performed a ceremony involving bread, eggs, wine and juice before sacrificing a goat to seek permission and protection from their ancestors for the excavation.
Then were archaeologists able to begin carefully uncovering the ancient settlement.
Remarkable Burials
Researchers documented 117 clusters of stone structures. Excavated 65 individual features, including several stone burial mounds known as tumuli. Radiocarbon dating revealed that many of the burials dated back to the 1400s decades before Portuguese explorers reached Angola.
Six burial mounds contained remains. The burials displayed diversity. Some individuals had been laid on their sides while others were buried in positions with their knees drawn toward their chests.
According to Angolan traditions this seated posture has often been associated with chiefs or important community leaders. However the archaeological evidence suggests a more complex social picture.
Of luxury goods many graves contained everyday objects such as pottery, grinding stones and iron slag.
Interestingly grinding stones have traditionally been associated with activities and women’s work. Their inclusion in burials raises questions about gender roles, symbolism and social status within these early communities.
Researchers believe women may also have held positions of social or ceremonial importance.
Unique Discovery
Among all the discoveries one artifact stood out above the rest. Archaeologists uncovered a ceramic urn containing cremated fragments of a human skull and teeth. This represents the known cremation burial ever discovered in Angola and has no direct archaeological parallel within the country.
Its purpose remains uncertain. Researchers believe the closest historical clues come from illustrations created during the 1680s by Capuchin missionary Antonio Cavazzi. His drawings frequently show pottery vessels playing roles during ceremonies involving oaths, sacrifices and other ritual activities across the region.
Although scientists cannot yet determine why the individual was cremated or why the remains were placed inside the urn the discovery points toward previously unknown funerary traditions practiced in central Angola centuries before European colonization.
Future excavations may eventually help explain this burial practice.
Preserving History
The discoveries at Caculo Cabaça significantly reshape historians’ understanding of Angola’s societies.
Then isolated settlements the evidence suggests that a large and organized community flourished in the Cuanza Basin well before European arrival.
Although much of the site will soon disappear beneath the reservoir created by the hydroelectric dam, researchers remain optimistic.
Additional stone structures have already been identified outside the flood zone offering hope that more discoveries remain waiting to be uncovered. Scientists believe continued excavation in these surviving areas will provide greater insight into Angola’s ancient civilizations. Importantly the project highlights the importance of rescue archaeology, where researchers work rapidly to preserve cultural heritage threatened by modern development.
The discoveries at Caculo Cabaça are more than a collection of graves and stone walls. They reveal a hidden chapter of Angola’s history demonstrating that sophisticated communities, with complex burial traditions and social structures existed centuries before foreign contact.
Even as rising waters erase much of the site the knowledge recovered from these excavations will continue to reshape the understanding of Angola’s remarkable archaeological past.