Mandalagan
Volcano on the island of Negros, Philippines
title: "Mandalagan" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["volcanoes-of-negros-island", "potentially-active-volcanoes-of-the-philippines", "stratovolcanoes-of-the-philippines", "subduction-volcanoes", "landforms-of-negros-occidental"] description: "Volcano on the island of Negros, Philippines" topic_path: "geography/philippines" source: "https://en.wikipedia.org/wiki/Mandalagan" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Volcano on the island of Negros, Philippines ::
::data[format=table title="Infobox mountain"]
| Field | Value |
|---|---|
| name | Mount Mandalagan |
| elevation_m | 1885 |
| prominence_m | 1340 |
| elevation_ref | |
| listing | Ribu |
| location | Philippines |
| map | Philippines |
| map_caption | Location of Mount Mandalagan in the Philippines |
| map_size | 220 |
| coordinates | |
| type | Stratovolcano |
| age | unknown |
| last_eruption | Unknown |
| mapframe | yes |
| mapframe-wikidata | yes |
| :: |
| name = Mount Mandalagan | photo = | photo_caption = | elevation_m = 1885 | prominence_m = 1340 | elevation_ref = | listing = Ribu | location = Philippines | map = Philippines | map_alt = | map_caption = Location of Mount Mandalagan in the Philippines | map_size = 220 | label = | label_position = | coordinates = | type = Stratovolcano | age = unknown | last_eruption = Unknown | mapframe = yes | mapframe-wikidata=yes
Mount Mandalagan is a complex volcano located at latitude 10.65° North (10°39'0"N), longitude 123.25° East (123°15'0"E), in the province of Negros Occidental, on the north of the island of Negros of the Philippines. It is located inside the Northern Negros Natural Park.
Mandalagan is a solfataric, fumarolic, potentially active stratovolcano. Mandalagan is also known as Nahigda nga Babayi or Lying Women for the Bacolodnons and Negrenses.
Physical Features
::figure[src="https://upload.wikimedia.org/wikipedia/commons/2/22/Mandalagan_2.jpg" caption="A solfatara area in Mt. Mandalagan."] ::
Elevation is 1885 metres (6,184 feet), with a base diameter of 26 kilometres.
Mandalagan is a deeply dissected complex volcano, with a highly altered volcanic dome.
Volcanic activity is reported to include seven volcanic centres, at least five craters and/or calderas up to 2 km in diameter, and a vigorous solfataric area at the highly altered volcanic dome structure.
One solfataric area emits a high-temperature (106 degrees C) plume to 30 m height with a roaring noise like a high-pressure geothermal borehole.
Images
The Smithsonian listing has a satellite photograph of the general area.
Geological Features
::figure[src="https://upload.wikimedia.org/wikipedia/commons/4/41/Mandalagan_1.jpg" caption="The Tinagong Dagat caldera is a popular hiking destination which floods during the wet season."] ::
Mandalagan is part of the Negros Volcanic Belt.
Rock type is principally andesitic with some dacitic
A crater located near the center called "Tinagong Dagat", where hikers camp.
Eruption
The most recent eruption produced a thin basaltic lava flow, but it is not known when this is likely to have occurred.
Listings
Philippine Institute of Volcanology and Seismology (PHIVOLCS) lists Mandalagan as potentially active.
The Smithsonian Global Volcanism Program lists Mandalagan as fumarolic.
References
References
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::