Murujuga, Northwestern Australia: When Arid Hunter-Gatherers Became Coastal Foragers

The Dampier Archipelago (Murujuga) in northwestern Australia is a rich rock art province located in an arid-maritime cultural landscape. The archipelago juts into the Indian Ocean just north of the Tropic of Capricorn. When people started inscribing this rugged granophyre landscape it was an inland range more than 100 km from the coast. Murujuga rock art is contextualized by a 47,000-year-old occupation sequence from the Pilbara, a model for stylistic change, and a predictive model that envisages how people may have adapted to this eventual seascape. Initial testing of an outer island suggests that highly mobile coastal foragers took advantage of interior ranges across the Abydos Plain as sea levels rose after the Last Glacial Maximum. This article describes for the first time evidence for Australia's earliest domestic stone structures (dated to between 8063 and 7355 cal BP) and tests the predictive model. Rosemary Island is an inscribed landscape that reveals the emergence of an arid island and provides insights into the dynamics of mobile arid hunter-fisher-gatherers in the early Holocene. It adds to the body of Australian evidence for island abandonment with insulation, but with minimal evidence for subsequent (re)colonization.