The alert level for Mt Tongariro has been reduced and officials are looking at reopening tracks which have been closed since the mountain's eruption.
Mt Tongariro erupted on August 6, forcing the closure of several mountain tracks. The increased activity prompted scientists to raise the alert level to level two.
Department of Conservation Ruapehu area manager Nic Peet said with the alert level lowered, the hazard and risk zone had also been revised. The centre of the eruption was focused on Upper Te Maari crater, reducing the risk area to a 3km radius.
"The 3km hazard and risk zone will remain in place for some time and will only be reduced once we have further information and a better understanding of the gas and ash composition to determine possible future scenario probabilities," Mr Peet said.
"We are now planning the staged reopening of facilities and tracks outside the hazard and risk zone."