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Latest news from Sinabung volcano:

Sinabung volcano (Sumatra, Indonesia), activity update: degassing activity
Thursday, Sep 30, 2010
No more ash explosions have been reported recently from Sinabung volcano. The crater remains active with strong degassing, creating a small steam plum... [more]
Sinabung volcano (Sumatra, Indonesia): more and increasingly strong explosions
Tuesday, Sep 07, 2010
At least one powerful explosion, probably the strongest so far, occured today at Sinabung volcano on Sumatra. The ash plume reached 25,000 ft elevatio... [more]

Sinabung volcano

stratovolcano 2460 m (8,071 ft)
Sumatra, Indonesia, -2.41°S / 101.73°E
Current status: restless (2 out of 5)
Sinabung webcams / live data
Typical eruption style: Explosive
Sinabung volcano eruptions: 2010
Sinabung is a typical stratovolcano in northern Sumatra next to the town of Berastagi.

Background:

There are no confirmed historic eruptions before the re-awakening in August 2010, but possibly it has had activity in around 1600 and 1881.
It is evident that Sinabung volcano has frequently erupted on its flanks producing lava flows. Sinabung has four overlapping summit craters, where fumaroles have been active, particularly in 1912, but no eruption followed the increase of fumarolic activity then. The 4 summit craters are aligned along a N-S direction. The youngest crater of this andesitic-to-dacitic volcano is at the southern end of the four overlapping summit craters.