# Mount Sibayak

- **Country:** Indonesia
- **Coordinates:** 3.239167, 98.505556
- **Type:** Stratovolcano
- **Listing:** Ribu
- **Location:** Sumatra, Indonesia
- **Other Name:** Gunung Sibayak (Indonesian) Deleng Sibayak (Karo)
- **Elevation M:** 2181
- **Volcanic Arc:** Sunda Arc
- **Last Eruption:** 1881

Mount Sibayak is a stratovolcano overlooking the town of Berastagi in northern Sumatra, Indonesia. Although its last eruption was more than a century ago, geothermal activity in the form of steam vents and hot springs remains high on and around the volcano. The vents produce crystalline sulfur, which was mined on a small scale in the past. Seepage of sulfurous gases has also caused acidic discolouration of the small crater lake.

![Photo of Mount Sibayak](https://upload.wikimedia.org/wikipedia/commons/9/92/Medan_%285953779938%29.jpg)

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