Una Una volcano
stratovolcano 507 m / 1,663 ft
Sulawesi & Sangihe Islands, Indonesia, -0.17°S / 121.61°ECurrent status
: normal or dormant
(1 out of 5) | ReportsUna Una volcano books
27 Feb 2020
Typical eruption style
Una Una volcano eruptions
: 1983, 1938, 1898-1900 (?)
No recent earthquakes
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Una Una (also known as Colo) is an isolated volcano in the Gulf of Tomni, offshore central Sulawesi. It is the site of sulfur extraction.
Una Una volcano is a broad, low volcano containing a 2-km-wide caldera with a small central cone. Only 3 eruptions are known in historic time, but 2 of them caused extensive damage over much of the island. The last eruption of Una Una was in 1983 and produced pyroclastic flows that swept over most of the island shortly after all residents had been evacuated.
Onset of an eruption: at first, pressurized gasses escape from the outer margin of the plug of solid lava plugging the circular vent, creating an initial ring of ash. (Ph...
At the moment of the collapse of the hornito, the lens (300mm) was pointed to an area immediately left of it, and this and the next photo show the "missing" left half of ...
The cone of Mt Marow volcano on Nguna Island (Photo: Tom Pfeiffer)
On top of the world... Our team member Ulla Lohmann is happy to have reached the world's highest volcano with almost 7000 m.
Ojos del Salado at 6893 m is the highes...
The old Dutch lighthouse at Anyer was ripped off its foundations by the giant 1883 Krakatau tsunami. (Photo: Tom Pfeiffer)
Nguna Island, little Pele Island and a small part of Efate Island in the background. (Photo: Tom Pfeiffer)
See also: Sentinel hub
| Landsat 8