| Good morning, everyone. |
| I've been invited to talk about my research project into Australian Aboriginal rock paintings. |
| The Australian Aborigines have recorded both real and symbolic images of their time on rock walls for many thousands of years. |
| Throughout the long history of this tradition, |
| new images have appeared and new painting styles have developed. |
| And these characteristics can be used to categorise the different artistic styles. |
| Among these are what we call the Dynamic, Yam and Modern styles of painting. |
| One of the most significant characteristics of the different styles is the way that humans are depicted in the paintings. |
| The more recent paintings show people in static poses. |
| But the first human images to dominate rock art paintings, over 8,000 years ago, were full of movement. |
| These paintings showed people hunting and cooking food |
| and so they were given the name 'Dynamic' to reflect this energy. |
| It's quite amazing considering they were painted in such a simple stick-like form. |
| In the Yam period, there was a movement away from the stick figures to a more naturalistic shape. |
| However, they didn't go as far as the Modern style, |
| which is known as 'X-ray' because it actually makes a feature of the internal skeleton |
| as well as the organs of animals and humans. |
| The Yam style of painting got its name from the fact that it featured much curvier figures |
| that actually resemble the vegetable called a yam, |
| which is similar to a sweet potato. |
| The Modern paintings are interesting because they include paintings at the time of the first contact with European settlers. |
| Aborigines managed to convey the idea of the settlers' clothing by simply painting the Europeans without any hands, |
| indicating the habit of standing with their hands in their pockets! |
| Size is another characteristic. |
| The more recent images tend to be life size or even larger, |
| but the Dynamic figures are painted in miniature. |
| Aboriginal rock art also records the environmental changes that occurred over thousands of years. |
| For example, we know from the Dynamic paintings that over 8,000 years ago, |
| Aborigines would have rarely eaten fish |
| and sea levels were much lower at this time. |
| In fact, fish didn't start to appear in paintings until the Yam period |
| along with shells and other marine images. |
| The paintings of the Yam tradition also suggest that, during this time, |
| the Aborigines moved away from animals as their main food source |
| and began including vegetables in their diet, as these feature prominently. |
| Freshwater creatures didn't appear in the paintings until the Modern period from 4,000 years ago. |
| So, these paintings have already taught us a lot. |
| But one image that has always intrigued us is known as the 'Rainbow Serpent'. |
| The Rainbow Serpent, which is the focus of my most recent project, |
| gets its name from its snake or serpent-like body |
| and it first appeared in the Yam period 4 to 6,000 years ago. |
| Many believe it is a curious mixture of kangaroo, snake and crocodile. |
| But we decided to study the Rainbow Serpent paintings |
| to see if we could locate the animal that the very first painters based their image on. |
| The Yam period coincided with the end of the last ice age. |
| This brought about tremendous change in the environment, |
| with the sea levels rising and creeping steadily inland. |
| This flooded many familiar land features |
| and also caused a great deal of disruption to traditional patterns of life, |
| hunting in particular. |
| New shores were formed and totally different creatures would have washed up onto the shores. |
| We studied 107 paintings of the Rainbow Serpent |
| and found that the one creature that matches it most closely was the Ribboned Pipefish, |
| which is a type of sea horse. |
| This sea creature would have been a totally unfamiliar sight in the inland regions where the image is found |
| and may have been the inspiration behind the early paintings. |
| So, at the end of the ice age, there would have been enormous changes in animal and plant life. |
| It's not surprising then, that the Aborigines linked this abundance to the new creatures they witnessed. |
| Even today, Aborigines see the Rainbow Serpent as a symbol of creation, |
| which is understandable given the increase in vegetation and the new life forms that featured when the image first appeared. |