Bidders will get the rare chance to secure a piece of New Zealand history when the largest known collection of samples from the famed Pink and White Terraces goes under the hammer.

Four times in the past week, I have put my life in the hands of Air New Zealand's decision to fly under an ash cloud.

Jetstar and Qantas have cancelled all today's flights to, from and within New Zealand.

Industry sources are warning that the volcanic ash cloud's impact on the tourism sector will be serious if the disruptions continue much longer.

Flights over New Zealand could be disrupted for days as ash from the Chilean volcanic eruption...

Air NZ would adjust flight routes and altitudes to ensure aircraft remained clear of ash.

International flights have been cancelled as a volcanic ash cloud from Chile heads towards NZ,

Liz Light takes a walk up Mt Taranaki.

The temperature of the lake has now fallen to about 33C and other monitored indicators show less activity.

Mount Ruapehu's Crater Lake is heating up, but there are no signs an eruption is imminent, say volcanologists.