The Lady Knox geyser at Waiotapu is persuaded to erupt every day with the aid of soap, which triggers an eruption. In the early 1900s a pipe was inserted in the vent, and a cone was built out of bricks, but the artificial structure is now completely covered by sinter. Here, the guide is putting the soap into the vent
Te whakamahi i tēnei tūemi
Private collection
Photograph by Simon Nathan
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