Mount Anak Krakatau's unique characteristics may explain why it can produce large amounts of volcanic ash during eruptions.

Mount Anak Krakatau remains under close watch as its recent volcanic activity changes, raising questions about the status of its ongoing eruption.

Over the past two days, the spread of volcanic ash has moved away from the summit of Mount Anak Krakatau. What will the days ahead bring?

Mount Anak Krakatau's unique characteristics may explain why it can produce large amounts of volcanic ash during eruptions.