Professor emeritus, University of the Witwatersrand

University of Cape Town

Associate Professor in Archaeology and Heritage Studies, University of Dar es Salaam

ICREA, Universitat de Barcelona

Professor of Archaeology, University of New England

Rock Art Research Institute, Wits University, retired

Griffith University

Distinguished University Professor, American University in Cairo

Professor of Archaeology, Flinders University

Independent Scholar, Founder 'Archaeology Travel'