Aliso Volcano
Updated: Nov 25, 2025 18:48 GMT -
stratovolcano
Ecuador, -0.53°S / -78°W 
Summit height: 4267 m / 13,999 ft
Current status: normal or dormant (1 out of 5)
Aliso volcano is a newly discovered active stratovolcano complex at the eastern foot of the Ecuadorian Andes, east of Antisana volcano and SW of the town of Baeza. It contains andesitic lava flows, lava domes and pyroclastic flow deposits. Aliso volcano is dormant and has been last active about 2000 years ago.
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Aliso volcano eruptions: 2000 years ago (?), 2450 BC (?)
Latest nearby earthquakes
| Date and Time | Mag / Depth | Distance / Location | |||
|---|---|---|---|---|---|
Background
from Smithsonian / GVP Aliso volcano information:The largely unexplored complex contains a curved summit ridge on the west with older andesitic lava flows and tundra-like vegetation, and rhyolitic and dacitic lava domes in a wet cloud-forest environment on the lower eastern flanks.
The Pumayacu center on the SE flank contains several lava domes along a NNE axis parallel to the Andean Thrust Fault System (TFZ). Morphologically young andesitic lava flows occur along the flat-topped ridge above Baeza town. The Pumayacu center erupted pyroclastic-flow deposits of late Pleistocene and Holocene age. One pyroclastic-flow deposit was dated at about 4400 years Before Present, and a pumice lapilli layer overlies a ceramic-rich cultural horizon thought to be about 2000 years old
Aliso Volcano Photos
After some time walking, we realize that we are actually on the glacier. (Photo: Tom Pfeiffer)
Significant volcanic eruptions: Aliso volcano
No historic eruptions are known from Aliso volcano, but at least one eruption in 2450 BC can be inferred from geological evidence.
The table below lists all known eruptions (date in bold face) of Aliso volcano in historic times and during the past 10,000 years. Updates on the most recent volcanic activity of Aliso can be found on the news page of Aliso volcano.
| Date | Note | VEI | Deaths | Damage | |
|---|---|---|---|---|---|
| Pumayucu | ? | ||||
Remark:
Our list of volcanic eruptions closely follows the database of eruptions of the Smithsonian's Global Volcanism Project (GVP), the internationally most recognized data source for volcanic eruptions, but also includes significant eruptive episodes or related volcano events. "Volcanic eruptions" are usually to be understood as sequences of individual eruptive episodes that can follow each other, or even overlap (if several vents are involved), and can last many years, decades or even longer. For example, the current activity of Stromboli volcano is understood as a single eruption that has been ongoing since 1934.
Sources: NOAA National Centers for Environmental Information (NCEI), Global Significant Volcanic Eruptions Database. doi:10.7289/V5TD9V7K | Global Volcanism Project / Smithsonian Institution
Aliso Volcano FAQ
+When was the last eruption of Aliso volcano?
The last confirmed eruption of Aliso occurred in 2450 BC.
Latest satellite images
Aliso Volcano Maps
Below is a selection of maps showing the location and surroundings of the volcano at various resolutions based on aerial-imagery / terrain maps. Feel free to use them for non-commercial purposes on your blog or website as long as you credit them with a link back to this page (click to copy it).
Satellite/aerial-type map of Aliso volcano (world scale)
Terrain-type map of Aliso volcano (world scale)
Satellite/aerial-type map of Aliso volcano (region scale large)
Terrain-type map of Aliso volcano (region scale large)
Satellite/aerial-type map of Aliso volcano (region scale medium)
Terrain-type map of Aliso volcano (region scale medium)
Satellite/aerial-type map of Aliso volcano (region scale small)
Terrain-type map of Aliso volcano (region scale small)
Satellite/aerial-type map of Aliso volcano (local scale large)
Terrain-type map of Aliso volcano (local scale large)
Satellite/aerial-type map of Aliso volcano (local scale medium)
Terrain-type map of Aliso volcano (local scale medium)
Satellite/aerial-type map of Aliso volcano (local scale small)
Terrain-type map of Aliso volcano (local scale small)
Satellite/aerial-type map of Aliso volcano (scale of 10s of km)
Terrain-type map of Aliso volcano (scale of 10s of km)
Satellite/aerial-type map of Aliso volcano (scale of 20-40 km)
Terrain-type map of Aliso volcano (scale of 20-40 km)
Satellite/aerial-type map of Aliso volcano (scale of approx. 10-20 km)
Terrain-type map of Aliso volcano (scale of approx. 10-20 km)
Satellite/aerial-type map of Aliso volcano (scale of 5-10 km)
Satellite/aerial-type map of Aliso volcano (scale of few kilometers)
