About the Authors
- Steven J. H. Walker
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Affiliation Department of Archaeology, University of Cape Town, Rondebosch, South Africa
- Vasa Lukich
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Affiliation Department of Earth Sciences, University of Toronto, Toronto, Ontario, Canada
- Michael Chazan
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* E-mail: mchazan@chass.utoronto.ca
Affiliation Department of Anthropology, University of Toronto, Toronto, Ontario, Canada
Competing Interests
The 2013 field work was carried out under the auspices of the Archaeology Department, McGregor Museum, for PZK Beleggings, under the direction of Jaco Minnie of Leon Frank and Partners. Although some of this project was funded commercially, this does not alter the authors’ adherence to PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: SJHW VL MC. Performed the experiments: SJHW VL MC. Analyzed the data: SJHW VL MC. Contributed to the writing of the manuscript: SJHW VL MC.