Krakatau is a typical stratovolcano that has erupted therefore always accompanied by powerful explosions and emissions of huge quantities of ash. The study of the volcano and surrounding areas established the trail of a powerful prehistoric eruptions. According to volcanologists assumptions, one of the most powerful eruptions occurred in 535. This eruption led to global climatic impacts on the Ground that the marked dendrochronologie, studied the growth rings of ancient trees in different parts of the world. Under some assumptions, this eruption accompanied by collapse of large surface area, formed the Sunda Strait separating the Islands of Java and Sumatra.
The most famous eruption of Krakatau in the historical period took place in 1680 and 1883. The last eruption almost destroyed the island, which was located at the volcano..