20:32Science In ActionUnderstanding the Anak Krakatau eruptionBBC World Service Duration: 27 minutes Thu 19th Dec 2019, 20:32 on BBC World Service AustralasiaAvailable for over a yearListen nowHow a relative small volcanic eruption caused a tsunami Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandScience In Action Source: BBC Online