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This chilling footage shows how an enormous supervolcano could wipe out a large city if it erupted.
The clip shows a massive explosion from the water before rubble and ash soar into the sky, sending a huge wave towards Auckland in New Zealand.
The visualisation was created as part of research undertaken by volcanologist Professor Colin Wilson into the threat posed to New Zealand by a super-volcano eruption.
His studies have found that a volcanic eruption in the Hauraki Gulf would destroy anything within a 2.5km radius and severely hinder transport networks.
The video shows what would happen if New Zealand's volcanic Rangitoto Island woke from its slumber in the Hauraki Gulf, reports News Now .