Mount Anak Krakatau is located in the Sunda Strait (the strait between the islands of Java and Sumatra), Indonesia has been known to the world since its largest eruption in 1883. The eruption was only inferior to the 7-scale eruption of Mount Tambora in 1815 and the 8-scale eruption of Mount Toba in North Sumatra, 74,000 in 2017. The Krakatoa eruption was said to be 21,574 times the explosive power of the atomic bomb that melted Hiroshima (De Neve, 1984). In addition to obliterating the island of Krakatoa, the eruption destroyed life on the coasts of Banten and Lampung. At that time, Anak Krakatau erupted by spewing volcanic ash and water vapor that was hurled into the air as high as 11 kilometers from the Crater of Action. The sound of the explosion was heard up to 200 kilometers away. The intensity increased on August 26 and peaked on Monday August 27. On August 27, fine rock and ash were blown into the sky. Its height reaches 70-80 kilometers. It resulted in world weather distu...