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
Indonesia–Malaysia relations reaching 2,548,021 visitors in 2013. On the other hand, Malaysians are also the second largest visitors for Indonesia, reaching 1,302,237 travellers in 2011. The top visitors of both countries are Singaporean visitors. Kuala Lumpur, Malacca and Penang are popular destinations for Indonesian travellers, and vice versa Bandung, Medan and Bukittinggi are particularly popular among Malaysian tourist. Indonesia–Malaysia relations Indonesia–Malaysia relations (Indonesian and ; Jawi: هوبوڠن إندونيسيا–مليسيا) are foreign bilateral relations between Indonesia and Malaysia, and it is one of the most important bilateral relationships in Southeast Asia. Indonesia and Malaysia are two neighbouring nations that share similarities in many aspects.