The cliffs surrounding Macauley Island are seen here from the north-east. The main part of the island is a volcanic cone, right, which has been largely eroded away. A huge ignimbrite eruption about 6,300 years ago formed the white pumice cliffs. A younger, dark-coloured basalt lava flow filled a valley eroded in the pumice (centre). This – one of the few places where it is possible to climb up the cliffs – was the site of the castaway depot.
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Photograph by Malcolm Francis
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