Rotorua is inside a vast caldeira of 15 km of diameter,
formed 220 000 years ago, and looked down by a more recent dome, Mount Ngongotaha
- back on the picture. It is famous as the sulfur city, with its unpleasant
smell but also by its naturally hot wheated waters -offering very nice and relaxing
spas.
Rotorua is perhaps the only city in the world where
wandering in the Cental Park make you take a risk because the underground activity
: on the 26 January 2001, phreatic explosions have pojected, during 10 to
à 15 minutes, stones, mud and hot water till 100 m high. fortunatunately, nobody
has been wounded.