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Spirit figure, drawn in ochre in Mimi style on a rock shelter roof
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Aboriginal rock art: running men wearing head decorations and elbow ornaments
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Wittenoom dolomite
Wittenoom dolomite. The light grey siltstone is a rare form of limestone that may signal mass extinction of marine life over two billion years ago when the Pilbara Block was an arctic landmass and the planet froze from pole to pole. Most limestone is a by-product of relatively shallow, light-dependent marine life, but this ancient limestone has a peculiar chemical composition and was formed in still water at great depth. (More). Karijini National Park, Pilbara region, Western Australia
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