Indonesia's former tallest peak, Mount Tambora (8,930 ft, 2,722 m), is an active stratovolcano whose 1815 eruption was the largest ever in recorded history - killing nearly 71,000 people. The lowest point is the Indian Ocean (0m). (5,030 m) Puncak Jaya is also the world’s highest island peak and the Southwestern Pacific’s tallest mountain. Located in the Papua province and as a part of the Sudirman mountain range is Puncak Jaya – the highest point in Indonesia. The mountains with the highest elevations ( over 16,000 ft) are found on Irian Jaya in the east.

These mountains on the major Indonesian Islands are densely forested and volcanic in origin. Of these islands, the larger islands of Sumatra, Java, Kalimantan (which comprises two-thirds of the island of Borneo), Sulawesi, and Irian Jaya are quite mountainous, with some peaks reaching 12,000 ft. km, and strategically positioned between the Pacific and Indian Oceans, Indonesia comprises over 17,504 islands and is by far the largest and the most varied archipelago on Earth.

South sumatra indonesia