Forty years ago, 257 people were killed when Air New Zealand Flight 901 crashed into Mount Erebus on Antarctica.
It remains the worst peacetime disaster in New Zealand history, in terms of loss of life.
To mark the 40th anniversary of the disaster RNZ and Stuff are producing a six-part podcast examining the disaster, its causes, and the fallout - White Silence.
Stuff's Michael Wright is the one of the producers and hosts of the documentary and he joins us to chat about it.
You can listen to episode 1 of White Silence here.