Hunga Tonga-Hunga Haʻapai Volcano | caldera

 volcano, caldera

Hunga Tonga-Hunga Haʻapai is a volcano located about 30 kilometres (19 miles) south-southeast of Fonuafoʻou (also known as Falcon Island), an island which is part of the nation 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 kilometres (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. The island arc is formed at the convergent boundary where the Pacific Plate subducts under the Indo-Australian Plate.

On January 14, 2022 an eruption occurred, causing widespread ash fall and a tsunami in the Pacific, and that has appeared to have obliterated the island.

en.wikipedia.org/wiki/2022_Hunga_Tonga_eruption_and_tsu...