The Garbuna Volcano is a stratovolcano which, along with Krummel and Welcker, forms the Garbuna Group which sits atop another "shield" volcano. They are located at the southern end of the Willaumez Peninsula, just to the west of the town of Kimbe.
Until recently, it was assumed that the Garbuna volcano was probably dormant, or perhaps extinct. However on 17 October 2005 the Garbuna volcano erupted without warning. Ash was reported 4000m 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 and ash from the volcano had started contaminating some village water supplies. Eruptions continued into November 2005, although less violently. By January 2006, the main activity was limited to volumes of white vapour being discharged from the new vents.