Story: Volcanoes

Mt Ngāuruhoe erupting, 1975 (2nd of 2)

Mt Ngāuruhoe erupting, 1975

The final and most powerful of Ngāuruhoe’s 1974–75 eruptions took place on 19 February 1975. Within about 30 seconds the ash cloud had risen and expanded. Some of the heavier material in the ash column had started to drop, forming pyroclastic flows that travelled 2 kilometres into the Mangatepopo valley.

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Photograph by Graham Hancox

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How to cite this page:

Richard Smith, David J. Lowe and Ian Wright, 'Volcanoes - Cone volcanoes and volcanic fields', Te Ara - the Encyclopedia of New Zealand, (accessed 16 June 2024)

Story by Richard Smith, David J. Lowe and Ian Wright, published 12 Jun 2006