Geology of Indonesia active volcanoes formed Sumatra, Java, Bali, and Nusa Tenggara islands, most of which, particularly Java and Bali, emerged within the last 2–3 million years. The Pacific and Australian plate movements controlled the tectonics of the eastern portion of Indonesia. The tectonics processes in Indonesia formed major structures in Indonesia. The most prominent fault in the west of Indonesia is the Semangko Fault or the Great Sumatran Fault, a dextral strike-slip fault along Sumatra Island (about 1900 km). The formation of this fault zone is related to the subduction zone in the west of Sumatra. Palu-Koro fault is another major structural
Culture of Indonesia Culture of Indonesia The culture of Indonesia has been shaped by long interaction between original indigenous customs and multiple foreign influences. Indonesia is centrally-located along ancient trading routes between the Far East, South Asia and the Middle East, resulting in many cultural practices being strongly influenced by a multitude of religions, including Hinduism, Buddhism, Confucianism, Islam and Christianity, all strong in the major trading cities. The result is a complex cultural mixture very different from the original indigenous cultures. Examples of the fusion of Islam with Hindu include Javanese Abangan belief, the fusion of Hinduism, Buddhism and animism in Bodha,