Hunga Tonga

Hunga Tonga

Hunga Tonga-Hunga Haʻapai is a volcano located about 30 km south-southeast of Fonuafoʻou (also known as Falcon Island), part of Tonga.

The volcano is part of the highly active Tonga-Kermadec Islands volcanic arc, a subduction zone extending from New Zealand north-northeast to Fiji. The volcano lies about 100 km (62 mi) above a very active seismic zone. Magma is formed as two tectonic plates melt together under high heat and pressure, and the superheated rock is forced to the surface.