Krakatoa, or Krakatau, is a volcanic island situated in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung. From the YouTube video description that accompanied the following video: "Anak Krakatau volcanic activity at night, 24.-26.Oct.2018. Eruptions filmed in real time, no time lapse! Note abundant volcanic lightning in many of these eruptions. Also lava bombs hitting into the sea and causing fires inside the forest to the right side."