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The lava lake with zig-zag patterns on the crust at night (Photo: Tom Pfeiffer)
Observers on the crater rim, illuminated by the glow of the lava lake in the evening. (Photo: Tom Pf...
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The massive Gunung Awu stratovolcano occupies the northern end of Great Sangihe Island, the largest of the Sangihe arc. Deep valleys that form passageways for lahars dissect the flanks of the 1320-m-high volcano, which was constructed within a 4.5-km-wide caldera.
|Volcano type||Stratovolcano normal or dormant|
|Summit elevation||1320 m (4,331 ft)|
|Awu volcano eruptions||1640(?), 1646, 1699(?), 1711, 1812, 1856, 1875, 1883, 1885, 1892, 1893, 1913, 1921, 1922, 1930-31, 1966 (large sub-Plinian explosion), 1968(?), 1992, 2004|
|Typical eruption style|
Highly explosive. Pyroclastic flows and lahars.
Awu is one of Indonesia's deadliest volcanoes; powerful explosive eruptions in 1711, 1812, 1856, 1892, and 1966 produced devastating pyroclastic flows and lahars that caused more than 8000 cumulative fatalities during 5 eruptions (in 1711, 1812, 1856, 1892 and 1966).
Awu contained a summit crater lake that was 1 km wide and 172 m deep in 1922, but was largely ejected during the 1966 eruption.
The eruption in 2004 prompted the evacuation of 27,000 people, but the eruption eventually did not escalate into a major event.
More on VolcanoDiscovery:
Kelut volcano photos
: A new lava dome grew inside the crater lake during the effusive eruption in late 2007, replacing most of the lake. Watch the birth of a new mountain!
Igneous or magmatic rocks
: The most primitive rock type forms when magma (molten rock) solidifies - either inside the earth (plutonic rocks) or during volcanic eruptions (volcanic rocks). A short overview.
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