The force of the eruption
destroyed three islands
created by previous
volcanic activity and
generated tsunami waves
A huge ash cloud spread
to 160 miles (260km) in
diameter and rose up to
19 miles (30km) high
Caldera
A depression formed when a previous eruption caused an inward collapse
Vents
Magma chamber
Magma may have built up since large eruptions over 1,000 years ago. Eruptions in 2009, 2014 and 2015 may have been harbingers of a major event
The force of the eruption
destroyed three islands
created by previous
volcanic activity and
generated tsunami waves
A huge ash cloud spread
to 160 miles (260km) in
diameter and rose up to
19 miles (30km) high
Caldera
A depression formed when a previous eruption caused an inward collapse
Magma may have built up since large eruptions over 1,000 years ago. Eruptions in 2009, 2014 and 2015 may have been harbingers of a major event
Vents
Lava
Magma chamber