Walka is Desert design and inextricably linked with Tjukurpa: the Law and way of life of Anangu (Central and Western Desert Aboriginal people). The symbols were traditionally used in cave, ground and body paintings, in story telling, teaching and signalling inheritance. Meaning of the designs depends on its subject and particular people are responsible for their re-creation and teaching according to the Tjukurpa.  Highly experienced craftspeople have grown up making traditional tools and weapons under the instruction of their elders. They now apply this knowledge and express their world through art such as this. Both the dot painting and etching techniques, where walka is burnt into the wood with wire heated on a wood fire, have become Centralian traditions, evolving with the adaptaton of traditional design for public display and as a depiction of Tjukurpa and landscape. Derek has painted ngayuku ngura (my country), Balgo, a small community in Western Australia between the Great Sandy and Tanami Deserts. While many present day descendants use the now well known ‘dot painting’ technique, another school of Central Australian painting has been made famous by Albert Namatjira, a Western Arrente man. Originating in the Lutheran mission of Hermannsburg under the tutelage of a non- Aboriginal artist, Rex Battersbee, artists today have become adept at capturing the unique colours of the Centralian light and landscape. They continue to paint sites of ancient significance using a tradition of ‘western’ landscape painting which has become known as the Hermansberg school.