Indonesia's location on the edges of the Pacific, Eurasian, and Australian tectonic plates makes it the site of numerous volcanoes and frequent earthquakes.
Gunung Bromo , is an active volcano and part of the Tengger massif, in East Java. The name of Bromo derived from Javanese pronunciation of Brahma, the Hindu creator god.
Indonesia has at least 150 active volcanoes, including Krakatoa and Tambora, both famous for their devastating eruptions in the 19th century.
The eruption of the Toba supervolcano, approximately 70,000 years ago, was one of the largest eruptions ever, and a global catastrophe.
However, volcanic ash is a major contributor to the high agricultural fertility that has historically sustained the high population densities of Java and Bali.