# Semeru

- **Country:** Indonesia
- **Coordinates:** -8.107778, 112.921944
- **Part:** Mujur, Rejali, Glidik & Brantas basin
- **Type:** Stratovolcano
- **Listing:** Island high point 12thUltraRibu
- **Location:** Java, Indonesia
- **Part Type:** Headwaters of river basins
- **Elevation M:** 3676
- **First Ascent:** Unknown
- **Volcanic Arc:** Sunda Arc
- **Easiest Route:** Hike
- **Last Eruption:** 27 May 2026 (ongoing)
- **Volcanic Zone:** Ring of Fire
- **Label Position:** bottom
- **Prominence Ref:** Ranked 45th

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.

![Photo of Semeru](https://upload.wikimedia.org/wikipedia/commons/e/e3/Mount_Semeru.jpg)

**Source:** https://en.wikipedia.org/wiki/Semeru (Wikipedia, CC BY-SA)