There are many volcanoes across Australia and Zealandia. Highlights for volcano spotters include: (A) Sawn Rocks in New South Wales, (B) Glass House Mountains and (C) Undara Lava Tubes in Queensland, (D) Mt Gambier in South Australia, (E) Organ Pipes in Victoria and (F) The Nut in Tasmania. Jo Condon / Mahsa-Chitsaz / Luisa Denu / Jane Farquhar / Charles G / Nick Carson / Around Aus, Author provided
Most of the world’s volcanoes form when a process called “subduction” pushes parts of the seafloor down into Earth’s mantle, where it melts and produces volcanism at the surface. The best-known example of this kind of volcanism is the Ring of Fire around the Pacific Ocean.