The volcanic alert level for Whakaari White Island has been lowered, after no further ash since an eruption last week.
But there is also a warning there could still be sudden and more explosive activity.
A plume of ash rose to about 1300 metres after a small eruption on Tuesday.
Earth Sciences said it had not detected anything further and it would be doing an observation flight as soon as conditions allowed.
The Volcanic Alert Level is now 2, because there are not any signs of an eruption.
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But the Aviation Colour Code is staying at Orange.
The agency said volcanic activity could still return with little or no warning.
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