Scientists are warning visitors to White Island to stay alert, saying the risk is still higher than normal following an eruption earlier in the month.
The volcano, off the Bay of Plenty coast, erupted at the beginning of the month, causing the crater lake to rise and prompting GNS Science to issue a low level alert.
It says the levels of carbon dioxide, sulphur dioxide and hydrogen sulphide being released are within typical limits, and the risk to visitors has declined.
However, GNS Science says eruptions could still happen at any time with little or no warning, so people should remain cautious on the island.
The aviation code for the volcano is still yellow, meaning aircraft need to be aware of the potential for an eruption.