1. Department of Geography, Oxford Brookes University, Gipsy Lane Campus, Oxford OX3 0BP, UK
2. School of Geography, University of Oxford, Mansfield Road, Oxford OX1 3TB, UK
3. School of Geography, University of Oxford, Mansfield Road, Oxford OX1 3TB, UK, Department of Geography, Eton College, Windsor SL4 6DW, UK
4. Environmental Archaeology Unit, University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK
5. Department of Archaeology, University of Edinburgh, Old High School, Infirmary Street, Edinburgh EH1 1LT, UK