Una Una volcano
stratovolcano 507 m / 1,663 ft
North Sulawesi & Sangihe Islands, Indonesia, -0.17°S / 121.61°ECurrent status
(1 out of 5) | ReportsUna Una volcano books
2 Nov 2015
Typical eruption style
: ExplosiveUna 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.
To get to the rim of Marum, we first have to circle it and descend a bit again, following a ridge in a moon-like landscape of ash, erosion gullies and (fortunately not re...
View of the southern part of the caldera with a young lava flow (1988) visible by its brownish color. (Photo: Tom Pfeiffer)