George Nash is an Associate Professor at Geosciences Centre of Coimbra University ITM (Earth and Memory Institute), Polytechnic Institute of Tomar (IPT), Portugal, as well as working for SLR Consulting, an environmental planning consultancy based in the UK. His academic specialisms include the study of prehistoric and contemporary art, prehistoric architecture, mortuary practices, and buildings. In the past George has been involved in a number of major rock-art recording and interpretation projects, the most recent being in the Central Negev region of southern Israel and in central Andean Chile. In his native Wales, he is convener for the Welsh Rock art Organisation (WRAO). In addition to fieldwork, he has written, edited and co-edited many books on prehistoric art and monumentality, and written and presented programmes on European rock-art and contemporary graffiti for the BBC.