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The “ring of fire” typically refers to the basin of the Pacific ocean where there is a disproportionately high number of volcano eruptions and earthquakes. It is about 40,000 kilometres around in a horseshoe configuration. It is home to some of the most active and dangerous volcanoes in the world – in fact, it is home to around 75% of the world’s dormant and active volcanoes – a total of 452 volcanoes.

Approximately 90% of the world’s earthquakes also occur along the Ring of Fire. The high level of tectonic activity is caused by plate tectonics.