New Zealand has two islands. There is volcano where is north island because of Pacific plate and India-Austria plate strike at east side of north island and it makes volcano at west side. Japan also has volcano but Taupo volcanic region has not only typical volcano of island model as Japan but also four volcanoes center in middle and stability volcano in north and south.
Taupo volcanic region is the best active spot in New Zealand. It is twenty from forty kilometers in width but length is two hundreds forty kilometers! This region is classified five areas and there is called Okataina, Maroa, Rotoruacaruta, Tongariro and Taupo in north order.