Archaeological survey near Tsabong, Kgalagadi District, southwestern Botswana.

The importance of the arid interior of southern Africa for human evolution has come into focus in recent years. However, the current distribution of archaeological sites is limited to the southern margin of the Kalahari sediments in South Africa and to the northern part of Botswana. Surface scatters of archaeological artefacts in other parts of the Kalahari have not been studied systematically despite their potential to test human adaptation to marginal environments in the past. We developed a mobile Geographical Information System (GIS) set-up that allows us to record the archaeological potential of Botswana's southwestern Kgalagadi district in a rapid and standardised manner. This paper describes five archaeological sites identified through our survey in the wider area around the town of Tsabong. Four of these sites, as well as the majority of identified surface archaeology, belong to the Middle Stone Age based on a first assessment of their lithic typology. A pattern is emerging of particular concentration of these sites on or near quartzite outcrops that are located next to pans. Additionally, six test pits confirmed the high potential for further archaeological investigations in this area using a landscape approach. [ABSTRACT FROM AUTHOR]