Tussock and shrubs grow in the rubbly path forged by a lahar (volcanic mud flow) from Mt Ruapehu. The heat of volcanic eruptions can melt snow and ice. Meltwater mixes with rocks and soil and sweeps down established channels, destroying all vegetation and anything else along the way.
Using this item
Department of Conservation
Reference:
10057760
Photograph by Herb Christophers
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