A helicopter is joining in the efforts to put out a major fire near Sulphur Point in Rotorua.
About six fire trucks are at the scene and a helicopter with a monsoon bucket is about to take off.
Police are advising people to stay away from walking tracks around Sulphur Point where the fire has broken out.
Senior Sergeant Malcolm Collins said the fumes had the potential to be poisonous and they were asking people to stay away from the tracks.