Ash emission from the NE vent. (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
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.
Videos taken during our volcano expeditions and tours, showing eruptions, volcanic phenomena and more.
17 days volcano trekking
: This is one of our most exciting volcano tours! Halmahera, North Sulawesi and the Sangihe Islands are not only very scenic and interesting as well as nearly unspoiled by tourism, but also home to some of the country's most active (and often erupting) volcanoes, inclduing Dukono, Ibu, Lokon, Soputan and Karangetang.