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Kavachi Volcano
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Kavachi is one of the most active submarine volcanoes in the Southwest Pacific, situated south of Vangunu Island in the Solomon Islands. Since its first recorded eruption in 1939, the volcano has periodically risen above sea level to form temporary islands, only to be eroded back beneath the waves by ocean currents. Often referred to as 'Reinhardt's Volcano,' it gained global fame in 2015 when researchers discovered scalloped hammerhead and silky sharks living inside the active crater despite extreme acidity and heat, earning it the nickname 'Sharkcano.' Eruptions are frequently phreatomagmatic, propelling plumes of ash and steam hundreds of meters into the atmosphere. Kavachi's continuous activity is a significant feature of the Pacific Ring of Fire and provides geologists with rare opportunities to observe the birth and erosion of volcanic islands in real-time.
- Location: Solomon Islands
- Nearby: Nggatokae Island (35 km)
Best time to visit & climate
The most pleasant time to visit is Aug, Sep, Nov.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 |
| Rain mm | 302 | 324 | 301 | 235 | 216 | 237 | 270 | 221 | 226 | 235 | 205 | 222 |
📋 Practical info
Best season
The Kavachi Volcano is a submarine volcano whose activity is hard to predict. The best time to visit is during the drier months from May to October, when the sea is calmer and boating conditions safer.
Best time of day
Early morning waves are generally lower, making the approach easier. Late morning light is best for observing seabirds and possible signs of volcanic activity.
Etiquette
Keep a safe distance from the volcano as sudden eruptions can be dangerous. Landing on newly formed islands is prohibited, and collecting rock samples is not allowed.
What to bring
Bring a good pair of binoculars to look for signs of activity from the boat. A waterproof camera and life jacket are essential.
Getting there
The volcano lies in the New Georgia Islands and is accessible only by boat from nearby islands such as Vangunu or Gatokae. No organized tours exist; you must charter a private boat.
What to expect
Volcanic activity is unpredictable - you may find a calm water surface or signs of gas bubbles and discoloration. Take time for the journey and be prepared for distant observation.
Geography
Facts
- The first scientifically documented eruption of Kavachi occurred in 1939.
- The volcano is situated roughly 30 kilometers south of Vangunu Island.
- The summit typically rests approximately 20 meters below the surface of the ocean.
- In 2015, National Geographic researchers filmed sharks thriving inside the active crater.
- Eruptions often produce large rafts of floating pumice that drift across the Pacific.
- Kavachi is named after a sea god of the New Georgia Island indigenous people.
Explore nearby
Notable places around
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Sights in the town Kavachi Volcano (1)
Sights nearby
Frequently asked questions
Is Kavachi volcano active?
Yes, it is one of the most active underwater volcanoes in the world.
Can you visit the volcano safely?
Due to its explosive nature, a large safety distance is mandatory.
What can you see during a boat trip?
During eruptions, steaming fountains and discolored water are visible.
Is a diving expedition possible there?
Diving in the immediate vicinity is life-threatening and prohibited.
Where to get information?
Local tour operators in Seghe or Munda have up-to-date data.
Kavachi Volcano: where is it located?
Kavachi Volcano is located in Solomon Islands.
Kavachi Volcano: when is the best time to visit?
The most pleasant time to visit is Aug, Sep, Nov.
Kavachi Volcano: why is it worth visiting?
Kavachi is one of the most active submarine volcanoes in the Southwest Pacific, situated south of Vangunu Island in the Solomon Islands.
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History & landmarks
Honiara City Council
The city council's administrative building is the hub of Honiara's local government.
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Kavachi Submarine Volcano
Kavachi is one of the most active submarine volcanoes in the Pacific.
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The world's largest saltwater lagoon.
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Nature
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More places
Noro
Noro is a major industrial town in the Western Province known for its deep-water port.
Wickham Anchorage
An anchorage on Vangunu Island captured in 1943 to intercept Japanese supply lines to the New Georgia islands.
Seghe Airstrip
An airfield at the southern tip of New Georgia, captured by Allied forces in 1943 to support the offensive on Munda.
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Viru Harbour
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Viru Timber Port
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Viru Harbor
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Blanche Channel
A channel between New Georgia and Rendova.
Rendova Peak
The prominent volcanic peak on Rendova Island that served as a major landmark for WWII pilots and naval navigators.