Date recorded: 2 March 2021.

A piece of haematite (ochre) from the Madjedbebe rock shelter in Arnhem Land and how this important object inspired the Grigoryan Brothers composition. Courtesy ABC Classic

Date recorded: 2 March 2021. A piece of haematite (ochre) from the Madjedbebe rock shelter in Arnhem Land and how this important object inspired the Grigoryan Brothers composition. Courtesy ABC Classic

Deep Time

The National Museum of Australia's audio series explores Australia's social history: Indigenous people, their cultures and histories, the nation's history since 1788, and the interaction of Australians with the land and environment. The series includes talks by curators, conservators, historians, environmental scientists and other specialists.

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Deep Time

Deep Time