these pictures is impossible. Sometimes the approximate date, or at least an epoch, can be guessed from the content. The Sydney region has important rock engravings. Mount Grenfell Historic Site near Cobar, western New South Wales has important ancient rock-drawings. The Murujuga (Burrup Peninsula) area of Western Australia near Karratha is estimated to be home to between 500,000 and 1 million individual engravings. Kimberley region of Western Australia. Amateur archaeologist Grahame Walsh, who researched Gwion Gwion rock paintings in the region from 1977 until his death in 2007, produced a photographic database of 1.5 million Gwion Gwion rock paintings. Many of the Gwion rock paintings maintain vivid colours because they have been colonised by bacteria and fungi, such as the black fungus, Chaetothyriales. The pigments originally applied may have initiated an ongoing, symbiotic relationship between black fungi and red bacteria. The Grampians-Gariwerd region is Victoria is one of the richest Aboriginal rock art sites in south-eastern Australia. Some of the more well-known and easily accessible sites are the Ngamadjidj Shelter (Cave of Ghosts), Gulgurn Manja (Flat Rock), Billimina (Glenisla Shelter) and Manja (Cave of Hands); one of the most significant sites in south-eastern Australia is Bunjil's Shelter, near Stawell, which is the only known rock art depiction of Bunjil, the creator-being in Aboriginal Australian mythology. The Maliwawa Figures in Arnhem Land, a series of 571 paintings and a drawing, created between 6,000 and 9,400 years ago, show a style nor recognised by researchers in the field before new research was done in 2016–2018 and published in September 2020 by Paul Taçon and his team. The Turramurra site in western Queensland is opening in 2020. Cliffs on the property, for some time known as Grace Vale Station, are covered with ancient rock art, including paintings and etchings of megafauna, emu symbols and the traditional songline of the Seven Sisters. Planning for an educational centre created from local rock is under way. New Zealand In New Zealand, North Otago and South Canterbury have a rich range of early Māori rock art. The Takiroa Rock Art Shelter near Duntroon contains Māori artwork made from ochre and charcoal. Studies The archaeological sub-discipline devoted to the investigation of rock art is known as "rock art studies." Rock art specialist David S. Whitley noted that research in this area required an "integrated effort" that brings together archaeological theory, method, fieldwork, analytical techniques and interpretation. History Although