Lava fountain from the NE cone vent (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
Small spherical balls of volcanic ash that form from a wet nucleus falling through a volcanic ash cloud.
Raung volcano photos
: One of the largest and most active volcanoes in East Java, rarely-visited and relatively unknown Raung became (in)famous during its recent eruption in 2015 when its frequent ash plumes forced the repeated closure of Bali's airport.
Ibu volcano photos
: Ibu in Halmahera is one of the most active, but rarely visited volcanoes in Indonesia. A spectacular lava dome is growing inside the volcano's breached crater, with frequent explosions.