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Sunset over the caldera with Aspronisi island. (Photo: Tom Pfeiffer)
Bright eruption from the NE crater. (c)
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Unzen Volcano (雲仙岳 in Japanese), located on the Island of Kyushu about 40 kilometers east of Nagasaki city, is one of Japan's most active and dangerous volcanoes.
|Volcano type||stratovolcano normal or dormant|
|Summit elevation||1486 m / 4,875 ft|
|Unzen volcano eruptions||1996, 1990-95, 1798(?), 1792, 1690-92, 1663, 1663, 860(?)|
|Typical eruption style||Explosive|
Unzen is a group of several overlapping active stratovolcanoes (including Kinugasa on the north, Fugen-dake at the east-center, and Kusenbu on the south) located near the city of Shimabara, Nagasaki Prefecture, on the island of Kyushu, Japan’s southernmost main island. The massive basaltic to andesitic Unzen volcanic complex occupies much of the Shimabara Peninsula east of Nagasaki. Currently, Unzen's highest peaks are Fugendake (普賢岳) at 1,359 metres (4,459 ft) and Heisei Shinzan (平成新山) at 1,486 metres (4,875 ft).
The volcanoes formed along a 30-40 km long E-W aligned graben. The historically active vent of Unzen, Mayu-yama lava dome complex, is about 4,000 years old.
In 1792, the collapse of one of its several lava domes triggered a tsunami that killed about 15,000 people in Japan’s worst-ever volcanic-related disaster. The last eruptions of the volcano were from 1990 to 1995. The largest eruption in this period occurred on June 3, 1991, when a pyroclastic flow that reached 4.5 kilometres distance from the crater killed 43 people including the famous French volcanologists Katia and Maurice Krafft.
More on VolcanoDiscovery:
Vanuatu Volcano Tours
: One of the most exciting volcano travel destinations in the world! On our adventurous expeditions, you will get close to active lava lakes on Ambrym Island and the spectacular fireworks of Yasur volcano on Tanna Island.
Active volcanoes in China
: Did you know that there are at least 15 active volcanoes in China? The last eruption was from the Kunlun volcano in 1951.
Volcano Tours on Hawai'i
: The Hawaiian Islands are not only home to the most active volcanoes in the world, Kilauea and Mauna Loa on the Big Island, but also boast a unique natural environment. Born by volcanic activity of a very active hot spot in the middle of the Pacific Plate, they are a showcase of natural history.
: A physically active tour to visit and climb some of Indonesia's most active and famous volcanoes: Papandayan and Galunggung in West Java, Merapi in Central Java, Kelud, Semeru, Bromo, the Tengger caldera, and Ijen in East Java.