Sumatra West Sumatra Sulawesi Volcanoes Bali Ring of Fire West Sumatra Province Aceh Province Natural Disasters Volcanic Eruptions Earthquake Irian Jaya Tsunamis Kashmir East Java Flores Island North Sulawesi Sitaro Islands East Nusa Tenggara Java Island Natural Features Java Aceh Sulawesi Island Buton Central Regency Papua Sumatra Island Banda Aceh