Field note · Nature
Dolok Sibualbuali
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Sibualbuali is a stratovolcano in northern Sumatra, Indonesia. It has two solfatara fields on the eastern flank. There is a rhyolitic-dacitic lava dome, erupted from the Toru-Asik fault.
Source: Wikipedia (CC BY-SA 4.0) — https://en.wikipedia.org/wiki/Sibualbuali