About Reporoa
Reporoa is a caldera rising to 592 meters (1,942 feet) in New Zealand's Tonga-Kermadec Volcanic Regions. No historical eruptions have been recorded, though the volcano is classified based on geological evidence of past activity.
Geography & Climate
Reporoa is located in New Zealand, within the Taupo Volcanic Arc of the broader Tonga-Kermadec Volcanic Regions. Situated at 38.42° S, 176.33° E in the Southern Hemisphere, the volcano lies within a temperate climate zone. With a summit elevation of 592 meters above sea level, Reporoa is a moderately sized peak that remains accessible to hikers and researchers for much of the year. The volcanic landform is characterized as a caldera, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
GVP Reference Summary
The 10 x 15 km Reporoa caldera, occupying the Reporoa-Broadlands basin, lies near the W margin of the Taupo volcanic zone SSW of the Okataina volcanic center. The caldera formed about 230,000 years ago during the eruption of the voluminous ~100 km3 Kaingaroa Ignimbrite. Large slump scarps cut the N caldera rim; the S rim is buried by sediments. The Deer Hill rhyolitic lava dome was erupted after the caldera's S rim collapse; two other rhyolitic domes, Kairuru and Pukekahu, were emplaced within the caldera along a possible ring fault. The active Reporoa hydrothermal field lies within the caldera, and the Waiotapu and Broadlands (Ohaki) hydrothermal fields lie N and S of the poorly defined caldera margin. Eruptions within the caldera have not occurred since the late Pleistocene, but large hydrothermal explosions occurred at the Waiotapu thermal area immediately to the N at the time of the Kaharoa eruption of neighboring Tarawera volcano about 770 years ago.
— Smithsonian Institution, Global Volcanism Program
0 Recorded Eruptions
No eruption records available for Reporoa.
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Reporoa
Is Reporoa an active volcano?+
Reporoa is not currently classified as active. Its activity evidence is listed as "unknown." No recorded eruptions have been documented. However, no volcano is ever considered permanently extinct.
How high is Reporoa?+
Reporoa has a summit elevation of 592 meters (1,942 feet) above sea level. At 592 meters, it is a relatively low-elevation volcano.
What type of volcano is Reporoa?+
Reporoa is classified as a Caldera. Calderas are large volcanic depressions formed when a volcano erupts so powerfully that its magma chamber collapses, creating a basin that can be kilometers wide. They are often sites of some of Earth's largest eruptions.
Where is Reporoa located?+
Reporoa is located in New Zealand, in the Tonga-Kermadec Volcanic Regions. More specifically, it lies within the Taupo Volcanic Arc. Its exact coordinates are -38.420° latitude, 176.330° longitude.
Is it safe to visit Reporoa?+
Reporoa can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. New Zealand may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.
