Horomatangi Reef
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VolcanoLake Taupō
DateMost recently about 260 AD, but most significant 232 AD Unit Y (Hatepe eruption) and 1460 BCE Unit S
Start date1460 BCE Unit S
End date260 AD
| Horomatangi Reef eruptions | |
|---|---|
 Volcanic features of Lake Taupō. Red are active vents in last 2500 odd years. Blue are current active geothermal systems. | |
| Volcano | Lake Taupō |
| Date | Most recently about 260 AD, but most significant 232 AD Unit Y (Hatepe eruption) and 1460 BCE Unit S |
| Start date | 1460 BCE Unit S |
| End date | 260 AD |
| Type | Phreatomagmatic, Ultra-Plinian |
| Location | Lake Taupō, North Island, New Zealand 38°48′S 176°00′E / 38.8°S 176.00°E |
| VEI | 6 (Unit S), 7 (Unit Y) |
.svg)  Horomatangi Reef (New Zealand)   Horomatangi Reef (North Island) Horomatangi Reef location within New Zealand | |
The Horomatangi Reef or reefs is a feature of Lake Taupō, in the central North Island of New Zealand.
The reef is named after Horomātangi (Horo-matangi),[1] the tāniwha or water monster of the lake, who is said to reside in a cave adjacent to the nearby Motutaiko Island to the south.[2] The name Horomatangi Reefs perhaps better reflects its complex inner and outer structure with the shallow reefs separated by very deep areas, so tends to be used in the geological literature, while the term reef tends to be used geographically.