Out of all the Auckland volcanoes Rangitoto is the youngest but largest. Rangitoto emerged from the sea. Its crater is 60 meters deep. It's also a scoria cone and it erupted around about 600 to 800 years ago.
Rangitoto was the only Auckland eruption to be witnessed by man, and was the most violent eruption. Scientist believe it erupted more then once.
Today it has become a popular terrace.