Jillian HuntleyDr Jillian Huntley is a Research Fellow at the Place Evolution Rock Art Heritage Unit in the Centre for Social and Cultural Research at Griffith University, Australia. She specialises in the physiochemical characterization of rock art and other archaological pigments and has been privileged in recent years to work on high-profile Australasian finds. Dr George Nash is an Associate Professor at the Museum of Prehistoric Art, Quaternary and Prehistory Geosciences Centre, Macao, Portugal. George has been a professional archaeologist for the past 25 years and has undertaken extensive fieldwork on prehistoric rock-art and mobility art in Chile, Denmark, Indonesia, Malaysia, Norway, Sardinia, Spain and Sweden. In addition to fieldwork, he has also written and presented programmes on European rock-art and contemporary graffiti for the BBC. Read More Read Less