Changing perceptions of West Africa's past: Archaeological research since 1988

Archaeological research since 1988 in West Africa has focused almost exclusively on the period since 10,000 B.P. Significant advances have been made in our understanding of the Late Stone Age in the Sahara and Savanna zones, the advent of metallurgy and subsequent changes in metal technology, and the comparative trajectories of complex societies in different regions. Increasingly, data are being recovered that fail to conform to earlier Eurocentric assumptions emphasizing linear, progressive change through a series of evolutionary ages and stages. The search for new, more appropriate models for interpreting West Africa's past has infused the discipline with great theoretical vitality. Both ethnoarchaeological studies and traditional archaeological research programs in West Africa are contributing substantially to the articulation of new theoretical frameworks for African archaeology and potentially for the discipline as a whole.     

Introduction to the project and excavation of Diepkloof Rock Shelter (Western Cape,South Africa): a view on the Middle Stone Age

This introduction presents the background to the present research project at Diepkloof Rock Shelter, initiated in 1998. It is followed by a series of original papers that were presented in November 2010 at the join 13th PAA Congress (Panafrican Association of Prehistory and Associated Disciplines) and 20th conference of SAfA (Society of Africanist Archaeologists) at the University Cheikh Anta Diop in Dakar (Senegal). These papers were presented in a “Symposium on the MSA sequence of Diepkloof Rock Shelter: a view on the cultural evolution of southern African modern humans” organized by Pierre-Jean Texier, Guillaume Porraz, John Parkington and Jean-Philippe Rigaud. This series of papers is a first attempt at a multidisciplinary reconstruction of the way Middle Stone Age people inhabited the site of Diepkloof and the way they interacted with their environment. The resultant narrative outlines artifactual change through the sequence and discusses the factors that might underlie it.     

Holocene later stone age hunter-gatherers south of the Limpopo River, Ca. 10,000-2000 B.P.

Encouraged by new, ethnographically grounded interpretations of San rock art, Holocene hunter-gatherer research south of the Limpopo has undergone a partial paradigm shift over the last decade, away from ecological issues and in favor of questions of social organization and ideology. Earlier models relating changes in regional demography to environmental shifts now need revision, as do long-standing studies of seasonal mobility. New research emphasizes instead identification of exchange and alliance networks and patterns of seasonal aggregation and dispersal. However, several of the assumptions of these models remain untested, while dating problems make it difficult to integrate rock art with other components of the archaeological record. Critical use of a more diverse set of ethnographic data, from both within and beyond the Kalahari, is also needed. These points are emphasized in discussing evidence for social and economic intensification between 5000 and 2000 B.P. in several areas of the subcontinent (KwaZulu-Natal, the southern, eastern, and far western Cape).     

Behavioral ecological models of lithic technological change during the later Middle Stone Age of South Africa

This paper examines changes in the organization of lithic technological systems during the later Middle Stone Age (MSA) of South Africa. Using principal components analysis (PCA), the study looks at the lithic data from two important South African MSA sites: Blombos Cave and Klasies River Mouth. The paper uses PCA to describe the transition to (1) the biface-dominated Still Bay industry at Blombos Cave and (2) the microlithic Howiesons Poort industry at Klasies River Mouth. Based on these analyses, the paper offers a synthetic scenario of the emergence of the Still Bay industry from earlier MSA industries, closely followed by the dramatic transition to the Howiesons Poort. Using a few principles of tool design and behavioral ecological models derived from the study of modern foragers, the paper suggests that the Still Bay came about as the result of deteriorating environmental conditions at the beginning of Oxygen Isotope Stage 4, which caused resources to become scarce and more widely distributed. The study proposes that the bifacial point strategy of the Still Bay was a response to wider mobility patterns and increased movement away from lithic raw material sources. The paper then suggests that Howiesons Poort emerged as information sharing strategies improved, and resources in the environment could be more efficiently targeted with more task-specific tools. The paper closes by reviewing the implications of these findings for modern human origins in South Africa.     

The Chronological Evidence for the Introduction of Domestic Stock into Southern Africa

This essay reviews radiocarbon dates associated with the earliest evidence of domestic stock in southern Africa and reviews existing models for their introduction in light of the current evidence. Two primary models exist for the introduction of domestic stock into southern Africa: an early Khoisan wave and an Early Iron Age source. Neither model is completely supported by the evidence. Available chronological evidence suggests that Khoisan and Iron Age herders simultaneously ushered domestic stock into the northern and eastern regions of southern Africa. Early Iron Age groups in southern Zambia are likely external sources. Khoisan herders exclusively introduced domestic stock into Namibia and the Cape. However, in the northern and eastern regions of southern Africa, stock possession and transfers probably were complex and involved both Khoisan and Iron Age groups.     

Neolithic Pottery Traditions from the Islands, the Coast and the Interior of East Africa

Scholars have attributed the spread of agriculture and pottery technology to the larger part of eastern and southern Africa to Bantu speakers. However, the spread of similar aspects to the Kenya and Tanzania Rift Valley as far south as Eyasi Basin and as far east as Mount Kilimanjaro has been attributed to Cushitic speakers. Whereas the spread of these innovations to the Rift Valley region can be dated back to 3000 BC, the remaining part of eastern and southern Africa is alleged to have received similar innovations only after the BC/AD changeover, when iron technology was introduced. These theories can no longer be sustained. The coast of Tanzania, its immediate hinterland, and the deep sea islands of Zanzibar and Mafia were settled by people who had knowledge of agriculture and pottery making probably from 3000 BC. These innovations are also found to have spread to southern Africa in the last millennium BC. The introduction of iron technology and beveled/fluted pottery, associated with Bantu speakers, was just another stage in the cultural evolution of the people of eastern and southern Africa, but not the beginning of settled, farming/domesticating communities.La diffusion de l'agriculture et la technologie de poterie à la région plus grande de l'Afrique orientale et méridional ont était attribué au parleurs des langues bantou. Cependant, la diffusion des aspects semblables au Rift Valley de Kenya et Tanzania, sud au Bassin d'Eyasi et est au Mont Kilimanjaro ont était attribué au parleurs des langues Cushitic. Tandis qu'on peut dater la diffusion de ces innovations à la région du Rift Valley à 3000 BC, il est prétendu que la région restante d'Afrique orientale et méridional ont reçu les innovations similaires seulement après le changement de BC/AD, au temps que la technologie de fer était indroduit. Il n'est pas possible maintenant à sustenir ces théories. La côte de Tanzania, son hinterland immédiat/les regions près de la mer, et les îles de Zanzibar et Mafia, ont étaient colonisé par les personnes qui avait la connaissance de l'agriculture et de la poterie probablement à partir de 3000 BC. On peut trouver aussi que ces innovations ont diffusé à l'Afrique méridional pendant la dernier millénaire avant J. -C. L'introduction de la technologie du fer et la poterie avec le biseau, liée avec les parleurs des langues bantoues, était seulement un autre étape dans l'évolution culturelle du peuple de l'Afrique orientale et méridional. Il n'était pas le commencement des communautés établis qui ont pratiqué l'agricole et la domestication.     

Innovation,diffusion, and culture contact: The holocene archaeology of Ghana

Stressing recent research, this review of Ghana archaeology highlights what we know of the advent of sedentism, agriculture, iron technology, and urbanism in Ghana and examines how certain patterns in Ghanaian prehistory depart from the expectations of the progressive evolutionary model that has framed our understanding of world prehistory. It is also argued that the archaeology of Ghana has much to contribute to current debates on the relationship between material culture and identity, and the impact of the Atlantic economy on non-European peoples, and to our understanding of cultural diversity in the past.     

New radiometric ages for the Fauresmith industry from Kathu Pan,southern Africa: Implications for the Earlier to Middle Stone Age transition

The Fauresmith lithic industry of South Africa has been described as transitional between the Earlier and Middle Stone Age. However, radiometric ages for this industry are inadequate. Here we present a minimum OSL age of 464 ± 47 kyr and a combined U-series–ESR age of 542₋₁₀₇⁺¹⁴⁰ kyr for an in situ Fauresmith assemblage, and three OSL ages for overlying Middle and Later Stone Age strata, from the site of Kathu Pan 1 (Northern Cape Province, South Africa). These ages are discussed in relation to the available lithostratigraphy, faunal and lithic assemblages from this site. The results indicate that the Kathu Pan 1 Fauresmith assemblage predates transitional industries from other parts of Africa e.g. Sangoan, as well as the end of the Acheulean in southern Africa. The presence of blades, in the dated Fauresmith assemblages from Kathu Pan 1 generally considered a feature of modern human behaviour ( McBrearty and Brooks, 2000, The revolution that wasn't: a new interpretation of the origin of modern human behavior, J. Human Evolution 39, 453–563),-provides evidence supporting the position that blade production in southern Africa predated the Middle Stone Age and the advent of modern Homo sapiens.     

Climate deterioration and land-use change in the first millennium BC: perspectives from the British palynological record

Climate deterioration at around the time of the Bronze Age/Iron Age transition has for long been argued to have resulted in upland abandonment in northern and western Britain, and recent research has provided evidence that a major climate downturn from 850 cal BC caused settlement abandonment in western Europe and potentially worldwide. It is, however, unclear to what extent only ‘marginal’ sites were affected, due to the lack of any systematic attempt to view the evidence for settlement and land-use change across a range of landscape types with differing sensitivities to environmental change. This paper addresses this issue by an evaluation of 75 pollen sequences spanning the late Bronze Age and early Iron Age in Britain to assess whether climatic deterioration was sufficient to cause widespread land abandonment. The results provide no evidence for wholesale land-use change at this time; the overall picture is one of continuity of land use or even increased agricultural activity. There are, however, hints of regional variability, with a greater tendency to abandonment of upland areas in Wales, and signs of woodland regeneration in agriculturally productive areas of lowland central southern England. The latter pattern may reflect a combination of rising ground-water levels affecting local land-use in the immediate vicinity of the mires which provide the source of the pollen data, against a backdrop of regional-scale social and economic changes at the Bronze Age-Iron Age transition.     

Prepared core reduction at the site of Kudu Koppie in northern South Africa: temporal patterns across the Earlier and Middle Stone Age boundary

Kudu Koppie is a stratified late Earlier Stone Age and Middle Stone Age archaeological site located in the northern Limpopo Province of South Africa. The prepared core reduction strategies are described and temporal trends across the ESA–MSA boundary are presented. The prepared cores and endproducts of Kudu Koppie suggest that both the late ESA and MSA toolmakers employed the Levallois Volumetric Concept, but they often exploited a nodule's natural convexities and form. The MSA toolmakers used a greater variety of prepared core methods and more intensively exploited cryptocrystalline and microcrystalline nodules, the scarcity of which may have resulted in a more “formalized” application of the Levallois Volumetric Concept. These observations are considered within the context of human behavioural evolution.     

New Perspectives on Early Regional Interaction Networks of East African Trade: A View from Tsavo National Park,Kenya

Archaeologists are interested in understanding whether cross-cultural contact catalyzed by exchange of commodities is a means for people to acquire new technology and cultural ideas. This paper reports the results and analysis of archaeological investigations in Tsavo National Park, Kenya in 2001 and 2004 that have recovered evidence of indirect contact between late pastoral neolithic (PN) herders and early iron working (EIW) communities. Analysis of stylistic motifs on ceramics used by both PN and EIW people show that socially constructed notions of aesthetics are similar, implying that a strong cultural connection between the two groups may be possible. New lexico-statistical analyses and archaeological data from Tanzania corroborate that the prehistoric East African milieu was more complex than previously believed. However, pastoralists in Tsavo show no evidence of utilizing iron technology or altering their subsistence strategies among the > 10,000 artifacts spanning 4,000+ years of prehistory recovered in the 2001 field season. Thus, long-distance and long-term contact between socially connected groups possessing different technological and subsistence foundations does not necessarily lead to a diffusion of new survival strategies.Les archéologues sont intéressés à comprendre la diffusion technologique et culturelle préhistorique [Les archeologues se sont interestesa comprendre la diffusion prehistorique de la technologie et de la culture]. Le contact entre les cultures catalysées par l'échange des produits est des moyens pour que les personnes acquièrent la nouvelle technologie et les idées culturelles. Cependant, le point auquel certaines idées sont acceptées ou rejetées demeure irrésolu. [Quand le contact contre-culturelle s'allie avec l'exchange de produits, les deux fournissent les nouvelles idees culturelles et technologiques aux gens. Mais, le point d D'autres données sont nécessaires pour augmenter nos compréhension de l'échange des idées entre les groupes de personnes et comment des changements de technologie. Les investigations archéologiques en parc national de Tsavo, Kenya dans 2001 ont récupéré l'évidence du contact indirect entre les bouviers néolithiques pastoraux (PN) en retard et les premières communautés du fondre de fer (EIW). L'analyse des motifs stylistiques sur la céramique utiliser par des personnes de PN et d'EIW prouvent que les notions socialement construites de l'esthétique sont semblables, impliquant qu'un raccordement culturel fort entre les deux groupes peut être possible. Les nouvelles analyses lexico-statistiques et les données archéologiques de Tanzanie corroborent que le milieu africain est préhistorique était plus complexe que précédemment cru. Cependant, les bouviers préhistorique dans Tsavo ne montrent aucune évidence d'utiliser la technologie de fer ou de changer leurs stratégies de subsistance parmi les > 10.000 objets façonnés enjambant les années 4.000+ de la préhistoire récupérées dans la saison de 2001 champs. Ainsi, contact à longue distance et long terme entre les groupes socialement reliés possédant différentes bases technologiques et de subsistance ne mène pas nécessairement à une diffusion de nouvelles strategies de survival.     

Marine shell dates and surface lithic assemblages on the west coast of South Africa

Archaeological surface finds are difficult to date. There are several useful methods, but each requires special circumstances and has one drawback or another. On the west coast of South Africa marine shell are abundant on surface sites but they are rarely dated because they are perceived to be in disturbed context and in questionable association with artefacts. This paper attempts to rectify this misconception and shows that, although far from perfect, a large suite of surface dates can shed as much light as excavated data. On the Vredenburg Peninsula they help refute the hypothesis that two economically and culturally distinct populations shared this pre-colonial landscape since 2000 BP.     

Engraved ochre from a Middle Stone Age context at Klein Kliphuis in the Western Cape of South Africa

This paper reports on a piece of engraved ochre recovered from a Middle Stone Age context at the rock shelter site of Klein Kliphuis (Western Cape, South Africa). The ochre was associated with a mixed assemblage of Howiesons Poort and post-Howiesons Poort MSA artefacts, suggesting that it is substantially younger than similar finds at Blombos Cave. The implications of the find for arguments concerning the nature of Late Pleistocene behavioural evolution are discussed.     

Goats (Capra hircus), the Khoekhoen and Pastoralism: Current Evidence from Southern Africa

The current archaeological evidence for the presence of goats among herder societies in southern Africa is reviewed. Presumably, the Khoekhoen obtained goats from Bantu-speaking farmers, but the exact timing of diffusion is still unknown. Archaeological evidence for the presence of goats in the Western Cape remains, to date, elusive, despite historical reference to goats. It is very often impossible to distinguish sheep from goat based on fragmentary archaeological remains such as those commonly found in southern Africa. Intrinsic physiological characteristics make goats suitable farm animals, and they may commonly have acted as sheep-leaders during prehistoric times, a practice noted amongst the Khoekhoen during the early part of the 19th century. Acting as sheep-leaders might have required herders to deliberately keep goat numbers low. There are few depictions of goats in southern African rock art. Résume La preuve archéologique actuelle pour la présence de chèvres parmi les sociétés de berger dans Afrique méridionale est réexaminée. Vraisemblablement, le Khoekhoen a obtenu des chèvres de fermiers parlant Bantu, mais le moment exact de diffusion est toujours inconnu. La preuve archéologique pour la présence de chèvres dans les restes de Cap de l’ouest, dater, insaisissable, malgré la référence historique aux chèvres. C’est très souvent impossible de distinguer le mouton de la chèvre basée sur les restes archéologiques fragmentaires tels que ces ordinairement trouvé dans Afrique méridionale. Les caractéristiques physiologiques intrinsèques font des chèvres les animaux de ferme convenables, et ils ont pu servir ordinairement des mouton-dirigeants pendant les temps préhistoriques, une pratique réputée parmi le Khoekhoen pendant la première partie du 19e siècle. Servir des mouton-dirigeants pourrait avoir exigé que les bergers aient exprès gardé le niveau bas de nombres de chèvre. Il y a peu de représentations de chèvres dans l’art de rocher Africain méridional.     

Cattle in the West African savanna: evidence from 1st millennium CE Kirikongo, Burkina Faso

The West African sahel and savanna are today home to diverse cattle breeds derived from complex social, political and environmental processes over at least the past four thousand years. Current evidence from the sahel and its floodplains indicates multiple sizes of cattle over time that may correspond to modern breeds. However, little is known about the cattle further south in the savanna, such as the West African Shorthorn. These humpless cattle are well adapted to the environmental conditions of more humid zones, including their significant resistance to trypanosomiasis, or sleeping sickness. In this paper I present new archaeozoological data from the Iron Age village of Kirikongo, Burkina Faso (100-1700 CE) that indicate the presence of small cattle in the 1st millennium CE similar in size to West African Shorthorn. These results are contextualized through comparisons with other archaeological sites and environmental data in Central West Africa, suggesting that small cattle are generally associated with the savanna environment over time, and their distributions may have oscillated with climatic changes. Lastly, interregional processes are assessed given Kirikongo’s evidence for small savanna cattle in western Burkina Faso and their subsequent adoption in the Inland Niger Delta of Mali.     

The First Herders at the Cape of Good Hope

It is generally accepted that the earliest livestock and pottery were brought to the southern tip of Africa by Khoi-speaking herders from northern Botswana around 2000 years ago. The archaeological remains of that age, however, show no sign of such a migration. Rather, some evidence points to the arrival of the Khoi in the southwestern Cape toward the end of the first millennium AD. The earliest livestock and pottery, it is argued, probably reached the Cape of Good Hope some 2000 years ago by a process of diffusion. The implications of this model for the current debates on the transition from hunting to herding in southern Africa are discussed.     

Interregional Interaction in Southern Africa: Zhizo and Leopard's Kopje Relations in Northern South Africa, Southwestern Zimbabwe, and Eastern Botswana, AD 1000 to 1200

The dominant model of relations between Zhizo- and Leopard's Kopje-ceramic using groups in northern South Africa, southwestern Zimbabwe, and eastern Botswana between AD 1000 and 1300 has been one of hostile invasion by Leopard's Kopje groups, who are thought to have forced Zhizo groups into eastern Botswana (Huffman, 1978, 1986a, 1996). Leopard's Kopje groups are thereupon thought to have set about the process of nascent state formation in the absence of any significant contact, other than violence or intermittent intermarriage (Denbow, 1982, 1983, 1986; Huffman, 1986a, 1996), with their Zhizo (i.e., Toutswe) neighbors to the west. More recently, Denbow (1990) has modified his position to include trade in exotic goods as a regular feature of Leopard's Kopje–Zhizo relations. Radiocarbon and ceramic data from the Iron Age site Leokwe Hill, in combination with the available ceramic data and a reanalysis of the ceramics from the site Schroda, indicate that current interpretations of the relations between Zhizo and Leopard's Kopje groups need to be reconsidered. New hypotheses are presented that posit that the nature and intensity of interaction between these groups was more far-reaching than is currently thought.Le modéle dominant des relations entre les groupes qui ont utilisés les ceramiques Zhizo et ceux qui ont utilisés celles de Leopard's Kopje dans le nord de l'Afrique du Sud, sud-est du Zimbabwe et l'est du Botswana entre AD 1000 et 1300, a été l'invasion hostile par les groupes de Leopard's Kopje, qui, l'on pense avoir forcé les groupes Zhizo dans l'est du Botswana (Huffman, 1978, 1986a, 1996). Les groupes de Leopard's Kopje sont pensés avoir établi le procédée de l'état de formation (nascent) en l'absence de tous contacts significatifis, autre que la violence ou des mariages consanguins intermittents (Denbow, 1982, 1983, 1986; Huffman, 1986a, 1996), avec leur Zhizo (c.à.d. Toutwse) voisins à l'ouest. Récemment, Denbow (1990) a modifié sa position pour inclure le commerce des produits exotics comme une caractéristique réguliere des relations entre Leopard's Kopje et Zhizo. Le radiocarbonne et les données en céramique du site de l'âge de fer Leokwe Hill, en combinaison avec les données de céramiques disponibles et une ré-analyse des céramiques du site Schroda, indiquent que les interprétations des relations entre Zhizo et les groupes de Leopard's Kopje doivent être reconsidêrées. Des nouvelles hypothéses sont présentées qui proposent que la nature et l'intensité des interactions entre ses groupes étaient d'ptune portée bien plus grande que nous le pensons actuellement.Sashi-Limpopo Archaeological Project     

An improved OSL chronology for the Still Bay layers at Blombos Cave,South Africa: further tests of single-grain dating procedures and a re-evaluation of the timing of the Still Bay industry across southern Africa

This paper presents a series of new single-grain optically stimulated luminescence (OSL) ages for the Still Bay at Blombos Cave, South Africa, and compares them to previously published OSL, thermoluminescence (TL) and electron-spin resonance (ESR) ages for this site. Details are provided about the measurement and analytical procedures, including a discussion of the characteristics of the OSL signals of individual quartz grains. This forms the basis for further investigations into the sensitivity of the equivalent dose (D_e) estimates to a range of different analytical approaches, including changes in the size of the test dose, the choice of signal integration interval, the subtraction of an appropriate background, and isolation of the most light-sensitive (‘fast’) component of quartz OSL. We also report the results of an inter-operator test of D_e determination using seven new samples from Blombos Cave, and demonstrate the reproducibility of results obtained for two samples that had been dated previously at another laboratory and were measured and analysed again in this study. Together, these tests validate the robustness of the Blombos Cave single-grain OSL age estimates to a variety of alternative OSL dating procedures. We have incorporated, for the first time, these ages for Blombos Cave into a data set of all single-grain OSL ages for Still Bay and Howieson's Poort sites across southern Africa, and have used a statistical model to re-evaluate the timing and duration of the Still Bay industry. We calculate the most plausible start and end dates of the Still Bay as 72.2 ka and 71.3 ka, respectively – amounting to a duration of 0.9 ka – and estimate (with conventional 95% confidence) that this industry began no earlier than 75.5 ka, ended no later than 67.8 ka and lasted no longer than 6.6 ka.     

The origins of lithic projectile point technology: evidence from Africa,the Levant,and Europe

Projectile weaponry is a human cultural universal, but its origins and antiquity remain poorly understood. Stone- and bone-tipped projectile weapons have long been treated as emergent features of the "Upper Paleolithic" behavioral revolution. Recently it has been proposed that projectile technology was in widespread use among Homo sapiens populations in Africa during Middle Stone Age (MSA) times. One obstacle to researching the origins of projectile point technology is that the criteria archaeologists employ for recognizing plausible and implausible stone projectile points are largely subjective (overall tool shape, microwear traces). Tip cross-sectional area (TCSA) is a ballistically significant dimension that works well at discriminating North American stone projectile points (spearthrower dart tips and arrowheads) from spear points. This paper compares the TCSA values of ethnographic North American stone projectile points to hypothetical Middle and Upper Paleolithic stone projectile points from Africa, the Levant, and Europe. The results of this comparison do not support the hypothesis of widespread use of stone-tipped projectiles in Africa, the Levant, or Europe prior to 40 Ka. In the New World and in Australia, where we have the richest ethnographic record of stone projectile point use, these implements are largely employed in big-game hunting and in warfare. One or both of these factors may have played a role in the widespread adoption of stone projectile point technology after 40 Ka.     

Nomads of the Desert West: A shifting continuum in prehistory

The Desert West, a term first employed by Jesse D. Jennings to describe the geographic region where Desert culture evolved, is used to frame a discussion of adaptive diversity that focuses on the time period 1250 to 750 B.P. Variable pathways into and out of sedentism are explored and subsistence intensification, exchange, ideology, and warfare are discussed in relation to an adaptive mosaic of nomads and agriculturalists. I argue that a conjoint prehistory of the Great Basin and the Southwest is both possible and desirable and is needed to illuminate general social processes and major episodes of culture change affecting groups in the Desert West.