Otters and Science News: LATEST ERUPTION OF MOUNT SINABUNG IN INDONESIA. - It had lain dormant for 400 years before first erupting in 2010,

Indonesian Volcano Mount Sinabung spews out rivers of molten lava and giant plumes of ash as it continues to erupt for a fourth successive day.
The 2,460-metre volcano on the island of Sumatra, had been dormant for 400 years before it erupted in August 2010.
An eruption in February this year killed 16 people.
The flow of ash and molten rock has now reached four and half kilometers down the slope and is threatening nearby populated villages.
The ash clouds have reached three kilometers to the sky.
The latest series of eruptions began on October 5.
Indonesia is prone to seismic upheaval due to its location on the Pacific Ring of Fire.
It is difficult to keep farmers away because the slopes of the mountains are highly fertile.
The moving pillars of ash and air are caused by the burning 'pyroclastic flow' heating the air directly above it. This air rises, sucking still more into the sky above.