Garbuna Group

The Garbuna Group of volcanoes consists of three volcanic peaks, Krummel, Garbuna, and Welcker, atop a shield volcano. They are located at the southern end of the Willaumez Peninsula, just to the west of the town of Kimbe, in West New Britain, Papua New Guinea. Garbuna contains a large thermal field, probably Papua New Guinea's largest. Until recently, it was assumed that the Garbuna volcano was probably dormant, or perhaps extinct. The last eruption was believed to have occurred around 1300 AD, or 1,700 years ago. Evidence from past eruptions indicates large amounts of tephra and lava were produced.

However on 17 October 2005 the Garbuna volcano erupted without warning. Ash was reported 4,000 m above the summit. An ash warning for aircraft was distributed by the Darwin office of the Australian Bureau of Meteorology on 19 October, by which time a second new vent had appeared. Ash was apparently drifting to the northwest on 19 October and had contaminated some village water supplies.