Sacred mountains of Indonesia

Active volcano in Bali, Indonesia

Semeru is the highest mountain on the Indonesian island of Java and an active volcano located in the province of East Java in a subduction zone, where the Indo-Australian Plate subducts under the Eurasian Plate. Semeru is 3,676 m tall at its peak, making it the third tallest volcano in Indonesia.

Active volcano in Lombok, Indonesia

thumb|right|Kelimutu featured on a Indonesian rupiah|5,000-rupiah banknote Kelimutu (pronounced ) is a volcano close to the small town of Moni in central Flores island in Indonesia. It is around to the east of Ende, Indonesia, the capital of Ende regency in East Nusa Tenggara province. It has three volcanic crater lakes that differ in color. Tiwu Ata Mbupu, on the western side of the island is blue in color while Tiwu Nua Muri Kooh Tai and Tiwu Ata Polo are usually colors of green and red. These lakes shift color due to changes that occur within the geology and chemistry of the volcano.

Compound stratovolcano in Java, Indonesia