

Whakapapa, New Zealand
The smell of rotten eggs hits us as soon as we open the camper van door. That and the steam escaping from the ground are signs that we've arrived in New Zealand's volcanic heartland.
New Zealand sits astride a major fault in the earth's crust where the Pacific continental plate is sliding under the Australian one. That accounts for the earthquakes that regularly occur and in the centre of North Island, around Rotarua and Lake Taupo, generates some intense geo-...