By Duncan Wilson
Mt. Tongariro has erupted for the first time since 1897, throwing ash into the air and prompting a threat warning for the central North Island.
A member of the public alerted police shortly before midnight, stating that they could see "flame-like explosions" and an ash cloud coming from "a new hole in the side of the mountain".
Turangi local John described the beginning of the eruption to Marcus Lush as a huge rumbling, before he stepped outside and saw a huge plume of ash.
The guys at Adrift Outdoors have taken these photographs of the eruption overnight.
Plumes of ash and smoke crawl into the low cloud on the side of Mt. Tongariro during its eruption of August 7, 2012. Photo: Adrift Outdoors Ltd- Guided Tongariro Alpine Crossing, +64 7 8922751.