The Semeru volcano is located in East Java, Indonesia. Also known as the Great Mountain, the Semeru volcano is Java's highest mountain/volcano also one of Java's most active volcano.

its a volcanoe :}

Bromo Tengger Semeru National Park was created on 1982-10-14.

Mount Semeru, located in Indonesia, is primarily affected by the Indo-Australian plate subducting beneath the Eurasian plate. This subduction zone causes the tectonic force that leads to the volcanic activity and uplift of Mount Semeru.

there are several mountains in Indonesia such as Bukit Barisan in Sumatra Island, Semeru Mountain in Java Island, Jayawijaya Mountain in Papua