<P> The trend is for the latest eruptions to occur in the northwest of the field . Auckland has at least 14 large lava tube caves which run from the volcanoes down towards the sea . Some are several kilometres long . A new suburb, Stonefields, has been built in an excavated lava flow, northwest of Maungarei / Mount Wellington, that was previously used as a quarry by Winstones . </P> <P> Auckland's volcanoes are fuelled entirely by basaltic magma, unlike the explosive subduction - driven volcanism in the central North Island, such as at Mount Ruapehu and Lake Taupo which are of tectonic origin . The most recent and by far the largest volcano, Rangitoto Island, was formed within the last 1000 years, and its eruptions destroyed the Māori settlements on neighbouring Motutapu Island some 700 years ago . Rangitoto's size, its symmetry, its position guarding the entrance to Waitematā Harbour and its visibility from many parts of the Auckland region make it Auckland's most iconic natural feature . Because of its rich acidic soil and the type of flora growing out of the rocky soil, only a few birds and insects inhabit the island . </P> <P> The Auckland metropolitan area has a population of 1,534,700 people according to Statistics New Zealand's June 2017 estimate, which is 32.0 per cent of New Zealand's population . </P> <P> Many ethnic groups from all corners of the world have a presence in Auckland, making it by far the country's most cosmopolitan city . Europeans make up the majority of Auckland's population, however substantial numbers of Māori, Pacific Islander and Asian peoples exist as well . Auckland has the largest Polynesian population of any city in the world . As of the 2013 census, the city has 13 ethnic groups constituting more than one percent of the population . New Zealand Europeans are the majority at 52.3 percent, with indigenous Māori making up 10.7 percent . Other significant ethnic groups present in Auckland include Chinese (8.4%), Indian (7.5%) and Samoan (7.2%). </P>

What's the population of auckland new zealand
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