Capturing People on the Move: Spatial Analysis and Remote Sensing in the Bantu Mobility Project, Basanga, Zambia

From its inception in 2014, the interdisciplinary Bantu Mobility Project has sought to refocus research on the Bantu Expansions away from the macroscale towards a “writ small” approach within a well-defined region with well-understood episodes of language expansion, namely, the middle Kafue and middle Zambezi catchments of southern Zambia. This tighter focus enables the project to capture the human agency shaping movements of people, animals, material goods, and languages, and to consider the productive tension between mobility and rootedness as Bantu-speaking populations became settled in particular regions between the sixth and sixteenth centuries AD. From an archaeological standpoint, careful study of the spatial contexts of recovered artifacts—and of the various human activities that left them behind—captures different forms and scales of mobility that existed alongside the rootedness of mounded settlements occupied over generations. This paper shows how a better understanding of those spatial contexts, and the settlement patterns and land use they encode, is being achieved around Basanga, Zambia, by combining systematic archaeological survey with data derived from satellite imagery using analytical techniques available through GIS, such as spatial interpolation and linear regression modeling. Ultimately, the project will aim to integrate the insights of that geospatial analysis with other archaeological, linguistic, historical, and environmental datasets to capture the stories of the people whose ideas, practices, and forms of mobility and rootedness constituted the local experience of the Bantu Expansions.