Niuatahi
| Niuatahi | |
|---|---|
Bathymetry map of Niuatahi with 2 times vertical exaggeration | |
| Summit depth | −1,270 m (−4,167 ft) |
| Location | |
| Group | Northeast Lau Basin volcanoes |
| Range | Tofua volcanic arc |
| Coordinates | 15°22′44″S 174°00′10″W / 15.37889°S 174.00278°W |
| Country | Tonga |
| Geology | |
| Type | Caldera |
| Last activity | Unknown |
Niuatahi or also called Volcano O is a submarine volcano located in the far northern territory of Tonga. Since the cone in the middle is named Motutahi, the volcano is sometimes referred to as Niuatahi-Motutahi. Despite not having any record of any eruption, Niuatahi does have a record of recent hydrothermal activity.