[1] PACEA, Université de Bordeaux, Bâtiment B19, Avenue des Facultés, 33405 Talence Cedex, France
[2] Department of Geography, King's College London, K4U.06 Strand Campus, London WC2R 2LS, United Kingdom
[3] School of Archaeology, Research Laboratory for Archaeology and the History of Art, University of Oxford, 28 New Barnett House, Little Clarendon Street, Oxford OX1 2HU, United Kingdom