Tofua
| Tofua | |
|---|---|
Tofua Island (lower left) and neighbouring Kao Island, Tonga, Pacific Ocean | |
| Highest point | |
| Elevation | 515 m (1,690 ft) |
| Prominence | 515 m (1,690 ft) |
| Listing | List of volcanoes in Tonga |
| Coordinates | 19°45′00″S 175°04′30″W / 19.75000°S 175.07500°W |
| Geography | |
Tonga Islands, Tonga | |
| Geology | |
| Mountain type | Volcanic caldera |
| Last eruption | 2022 (Ongoing) |
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Tofua is a volcanic island in Tonga. Located in the Haʻapai island group, it is a steep-sided composite cone with a summit caldera. It is part of the highly active Kermadec-Tonga subduction zone and its associated volcanic arc, which extends from New Zealand north-northeast to Fiji, and is formed by the subduction of the Pacific Plate under the Indo-Australian Plate. It lies about 100 km (62 mi) above a very active seismic zone. It is connected to the nearby island of Kao by a submarine ridge.
The island is a national park.