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Ata Caldera  search
RTJapan
 Kyushu
 Polynesia
 Tonga
 volcanoes
SNVolcanic caldera on southern Kyushu, Japan. Also a caldera on uninhabited island of Ata, S Tonga. Search in combination with Kyushu or with Tonga as applicable. Indexed with Kyushu or Tonga as applicable.