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Auckland, New Zealand
It is the only city in the world built on a basaltic volcanic field that is still active. It is estimated that the field will stay active for about 1 million years. Surface features include cones, lakes, lagoons, islands and depressions, and several have produced extensive lava flows. Some of the cones and flows have been partly or completely quarried away. The individual volcanoes are all considered extinct, although the volcanic field itself is merely dormant. The trend is for the latest eruptions to occur in the north west 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.
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