Smithsonian Global Volcanism ProgramVNUM 266020

Ambang

Sangihe Volcanic Arc, Indonesia. This page separates the permanent volcano catalogue, historical eruption records, and selective weekly activity reports.

Coordinates: 0.75° N, 124.42° E
Elevation: 1,795 m
Last recorded eruption: 2005 CE
Historical eruption records: 2
Primary type: Complex
Evidence: Eruption Observed
GVP database: 5.4.0
Catalogue revision: Revision 2

Volcano profile

Volcanic landform: Composite
Tectonic setting: Subduction zone / Continental crust (> 25 km)
Geologic epoch: Holocene
Major rock type: Andesite / Basaltic Andesite
Region: Western Pacific Volcanic Regions
Subregion: Sangihe Volcanic Arc

Geological summary

The compound Ambang volcano is the westernmost of the active volcanoes on the northern arm of Sulawesi. The stratovolcano rises 750 m above lake Danau. Several craters up to 400 m in diameter and five solfatara fields are located at the summit.

Separate activity dataset

Weekly volcanic activity reports

Preliminary and selective

Smithsonian/USGS weekly reports are selective and preliminary. They are not a comprehensive list of all eruptions or volcanic activity.

No weekly report appears on this page. Absence from the weekly report does not establish an absence of volcanic activity.

Historical catalogue records

Eruption history

Dates can be approximate, incomplete, or BCE. These are historical catalogue observations, not a statement about present activity.

Historical Smithsonian GVP eruption records with original chronology, confirmation state, VEI, evidence, and source links.
Start	End	Activity	Confirmation	VEI	Evidence	Record
2005-12-22 CE	Not supplied	Confirmed Eruption	Confirmed	1	Observations: Reported	GVP 20947Database 5.4.0
1845-07-02 ±5 years CE (day uncertainty +/- 182)	Not supplied	Confirmed Eruption	Confirmed	Not supplied	Observations: Reported	GVP 16424Database 5.4.0

Source and attribution

Source: Data: Smithsonian Institution Global Volcanism Program, Volcanoes of the World.

View the original Smithsonian GVP record

Global Volcanism Program, 2026. Volcanoes of the World 5.4.0.

The GVP database is scientific documentation that changes as evidence is reviewed. Historical dates may be approximate or uncertain. This platform is not an official emergency-warning service.

Read the GVP terms of use

Data freshness

Source updated: Not supplied
Retrieved: 11 Oct 2026, 13:07 UTC
GVP database version: 5.4.0
Catalogue revision: 2

Source-update and retrieval times describe this catalogue record. Each weekly report carries its own publication date and preliminary status.