Ring of Fire
Indonesia

Indonesia is located where the Ring of Fire around the Pacific Ocean meets the Alpide belt (which runs from Southeast Asia to Southwest Europe).

The eastern islands of Indonesia (Sulawesi, the Lesser Sunda Islands (excluding Bali, Lombok, Sumbawa and Sangeang), Halmahera, the Banda Islands and the Sangihe Islands) are geologically associated with subduction of the Pacific Plate or its related minor plates and, therefore, the eastern islands are often regarded as part of the Ring of Fire.

The western islands of Indonesia (the Sunda Arc of Sumatra, Krakatoa, Java, Bali, Lombok, Sumbawa and Sangeang) are located north of a subduction zone in the Indian Ocean. Although news media, popular science publications and some geologists include the western islands (and their notable volcanoes such as Krakatoa, Merapi, Tambora and Toba) in the Ring of Fire, geologists often exclude the western islands from the Ring; instead the western islands are often included in the Alpide belt.
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