Research Projects in the Department of Archaeology

Image: Pastoralist rock art, Serengeti, Tanzania. Photo: P. Lane.

This project is documenting the knowledge, skills, and practices of traditional dry-stone masonry at Great Zimbabwe, southern Zimbabwe. Once the capital of an Iron Age empire, Great Zimbabwe is an ancient settlement complex with dry-stone structures covering over 720 hectares. Around it, local communities live and maintain ancestral connections to the site. The most outstanding material remains are stone structures, built without use of mortar or any binding material.

Tracking the early emergence of derived Homo-like cerebral features in the hominin fossil record can be expected to contribute to an understanding of the timing (i.e., chronology) and mode (i.e., process) of critical brain changes. Because brain tissue is not preserved in the fossil record, studies of hominin brain evolution focus on brain endocasts (i.e., replicas of the inner table of the bony braincase).

Our knowledge of human evolution is limited by several factors. One is tightly linked to the nature of the fossil record, as bones of our extinct human relatives and other primate species rarely appear in archaeological and paleontological sites, and when they do, they very commonly appear in an isolated fashion and/or are highly fragmented. These factors more severely affect studies of limb bones, which have been vaguely analysed or even ignored in certain cases.

Long-distance exchange networks played key roles in the socio-political history of Central Africa before the 20th century, but they are poorly known prior to the 19th century owing to a scarcity of written sources covering the earlier centuries. Archaeological data, however, suggest that major 19th-century trade routes were well established several centuries before.

How did our ancestors walk? Perhaps the greatest challenge that this question has posed in the past, is the lack of methodological applications in which no study has previously reconstructed how our ancestors moved using biomechanical modelling techniques. We need to consider not just individual bones when reconstructing movement, but to look at the full body to begin to tell the story of our ancestors’ movement. Muscles animate our body, permitting us to walk, run and even dance. We must reconstruct the muscles of the body to understand ancestral locomotion.

Despite recent progress in molecular analyses and the constant increase of the hominin remains in the fossil record, the chronological, geographical and evolutionary context of the emergence of the genus Homo remains largely debated. More importantly, the identity of our direct ancestors and assessment of the adaptations characterizing our genus remain unclear.

Around 1,200 years ago, archaeological evidence suggests pre-existing pastoralist societies that had been present in some parts of eastern Africa since c. 5,000 BP experience significant cultural and economic change. Materials signs of these include the uptake of iron smelting technologies, new ceramic styles, and changes in food production. In the following centuries, the region also experienced several significant shifts in climate, alternating between periods of increased rainfall and extended droughts.

Our understanding of the origins of our species, Homo sapiens, has undergone a major shift. New fossils, dates and genomic studies have consolidated our African origin. Yet, they also indicate a deeper past, involving multiple events. These events stretch to nearly three quarters of a million years ago (Ma), and take the problem of modern human origins into an entirely different climatic and ecological context.

Human evolution is a central research area in biology and anthropology and has a history of research going back more than 150 years. For most of that time, evidence has come from digging up fossils and archaeological remains. Research in human evolution has been transformed by the impact of genomics and the development of ancient DNA methodologies, producing new insights into past demography, dispersal and admixture patterns, social behaviour, selection, disease history, and more.

How did the biomechanics and ergonomics of the human hand influence the use and production of Palaeolithic stone tools? Traditionally, stone tools have been analyzed for their morphological properties and technological characteristics to infer the cognitive and social evolution of early hominins and modern humans. However, the role of musculoskeletal aspects in the effective use of these tools has been largely overlooked, resulting in an incomplete understanding of Palaeolithic technologies.

This project is a response to calls to build long-term sustainability and resilience into pastoral social-ecological systems in sub-Saharan Africa through provision of deep histories of human-environment interactions. It focuses on collecting and analysing archaeological and related data on the responses of pastoralist communities inhabiting the Laikipia and Leroghi plateaus, northern Kenya, to cycles of extreme drought and enhanced rainfall over the last millennium.

As part of the international campaign to salvage sites threatened by construction of the second Aswan High Dam in southern Egypt, coordinated by UNESCO, researchers from Sweden, Norway, Denmark and Finland collaborated on a series of archaeological campaigns between 1960 and 1964. Known as the Scandinavian Joint Expedition to Nubia, or SJE, this work generated a wealth of data and prompt publication of nine major excavation reports.

Igbo-Ukwu is a famous archaeological site in southeastern Nigeria. Excavated by Professor Thurstan Shaw in the 1960s, the site was settled over a thousand years ago. The materials from the site were unlike anything yet found in West Africa at the time. This discovery brought to our consciousness that Igbo-Ukwu represented a prosperous society that had established a complex social structure by the 9th century CE and had significantly interacted with the wider world through interregional and intercontinental exchange and trade.

Agriculture in Africa faces multiple challenges. Climate extremes, ecosystem degradation and population growth continually prompt calls for the urgent transformation of food systems. Mainstream attempts remain focused on modernising paradigms in ways that overlook historic and contemporary smallholder practice as primary sources of innovation. This project challenges this narrative, adopting an archaeological framework to reconceptualise smallholder innovation as an iterative historic process harnessable as a mechanism for future agricultural design.

Traumatic death affects our daily life, but how did traumatic mortality affect human behaviour from an evolutionary perspective? TRAUMOBITA aims to understand how traumatic mortality among prehistoric humans shaped our behaviour during the Late Pleistocene to the Middle Holocene. Confirming that how we died had an enormous influence on our ancestors and represents an enormous change in how we understand human societies.

The transition from Oldowan to Acheulean technologies are hypothesised to be concomitant with advances in cognition and behaviour. However, the nature of these shifts, and their cultural and evolutionary implications are poorly defined and understood. While extensive literature exists on these technologies, significant differences in research methods and traditions make comparative and comprehensive analyses problematic.

This project is examining resource landscapes and urban transition on Zanzibar during two major periods of urban growth. Fieldwork at Unguja Ukuu (7th–15th centuries) and Tumbatu (11th–15th centuries) on Zanzibar is exploring domestic contexts and investigating resource uses supporting the development of towns.

Geoarchaeological surveys and analyses are developing new multi-scalar sampling strategies for mapping and tracing land, water and building material resources for settlement, and their uses within houses.

This project brings together several research streams to examine the nexus relations between land and water resources, societal development, and landscape stability in sub-Saharan Africa. What processes and practices support long-term settlement and resource use? How did past societies secure water for settlement and urban growth? To address these questions, new landscape historical ecology research is exploring resource nexus at Aksum and Great Zimbabwe.

This is a collaborative research project between archaeologists and pastoralist community organisations on the long-term history of indigenous water management and well digging in northern Kenya and southern Ethiopia. In these arid and semi-arid parts of eastern Africa, wells form a key component of pastoralist biocultural heritage. Community identities and understandings of the landscape are entwined with knowledge – sometimes contested – about water sources, and particularly about the wells dug across the region by earlier generations.

As the complex mosaic of Quaternary human lineages across and beyond Africa becomes increasingly apparent, an accurate chronology is critical to disentangle the patterns and process, particularly those that link human evolution to palaeoenvironmental and climatic change.