The growth in tourism in Australia has meant that many Aboriginal rock art sites are now facing a new scale of visitor pressure previously unknown. It is now clear that management strategies designed to preserve these sites must deal with this problem. If management programs are to be effective they cannot rely on intuitive interpretations of visitor pressure. Rather, systematic and scientific studies of visitor pressure are needed to provide guidelines for management. This paper discusses some of the findings of the author's survey work on visitor pressure. They have found that the visitor population and the pressure placed on art sites is far from uniform and that certain sections of the visitor population place the art at greater risk than others. Effective management depends on identifying such risk groups and tailoring management strategies to deal with the specific pressures they represent.