Pacaya Volcano (Guatemala) – Location, History, Facts

Pacaya Volcano is an active volcanic complex in south-central Guatemala noted for frequent basaltic eruptions and persistent lava flow activity.

Pacaya Volcano, Guatemala.

Country: Guatemala
Coordinates: 14.3808° N, 90.6011° W

Pacaya Volcano overview

Pacaya Volcano is an active volcanic complex in south-central Guatemala noted for frequent basaltic eruptions and persistent lava flow activity. It reaches an elevation of 2,552 meters above sea level and forms part of the Central American Volcanic Arc. The volcano has modern scientific significance for the study of open-vent eruption dynamics and hazard assessment, and it has long held cultural importance for nearby communities and regional history.

Pacaya Volcano coordinates

Pacaya Volcano is commonly mapped at approximately 14.3808° N, 90.6011° W, or 14.3808, -90.6011 in decimal degrees.

Degrees: 14.3808° N, 90.6011° W

Decimal: 14.3808, -90.6011

Where Pacaya Volcano is located

Pacaya Volcano lies on the volcanic front of Guatemala, within the departments of Escuintla and Sacatepéquez. Its summit coordinates are approximately 14.381°N, 90.601°W. The edifice sits on the southern flank of the highland volcanic chain and overlooks the Pacific coastal plain. Nearby physiographic features include Lake Amatitlán to the north and a series of younger volcanic cones and lava fields that form the Pacaya volcanic complex.

Why Pacaya Volcano is important

Pacaya Volcano matters because its eruptive behavior combines frequent strombolian explosions with lava-flow emplacement, offering clear observational opportunities for volcanology and hazard science. The volcano produces tephra and lava that alter local landforms and influence soil development on adjacent slopes. Its activity affects air quality and agricultural lands in the region, making it a central subject for national monitoring programs. Pacaya’s relatively persistent activity distinguishes it from many more intermittent, explosively dominated Guatemalan volcanoes.

History of Pacaya Volcano

Pacaya formed as part of the Central American volcanic arc through repeated eruptions driven by subduction-related magmatism beneath the region. The present complex developed during the Holocene as successive eruptions built overlapping cones and lava-flow fields atop older volcanic structures. The edifice has experienced alternating cone-building phases, flank eruptions, and partial collapse that reshaped the summit area. In the twentieth century the volcano entered a prolonged phase of enhanced activity that established the modern eruptive pattern of frequent surface lava flows and intermittent explosive events.

Natural features of Pacaya Volcano

The volcano comprises a principal active cone surrounded by multiple subsidiary scoria cones and extensive lava flow fields. Rock types are dominantly basaltic to basaltic-andesite, producing scoria, ash, and blocky lava. Observable features include layered tephra deposits, radial and channelized lava flows, fumarolic areas, and steep depositional fans formed by fragmented material. The morphology reflects repeated low-viscosity lava emplacement interspersed with explosive strombolian activity that redistributes loose pyroclastic fragments across the slopes.

Environment, protection, and monitoring of Pacaya Volcano

The Pacaya landscape falls under national protected-area governance and is administered within Guatemala’s system of conservation authorities overseen by the relevant national agencies. Monitoring and scientific observation are conducted by the country’s volcanological institute to track seismicity, gas emissions, and eruptive behavior as part of long-term risk management. Conservation themes include rehabilitation of vegetation on older flows, management of erosion on unstable deposits, and coordination between governmental institutions responsible for land use and geological monitoring.

Pacaya Volcano facts

Spanish colonial-era chronicles include references to eruptions attributed to Pacaya, indicating awareness of its activity in the sixteenth century.
Pacaya sits roughly 25 kilometers south of Guatemala City, placing it in close geographic relation to the national metropolitan area.
Local communities have historically used scoria and other volcanic deposits from Pacaya for construction material and road fill.
The primary active summit cone is commonly known as Mackenney, which serves as the main vent for recent eruptions.
Pacaya National Park was established in 1961 to protect Pacaya Volcano and surrounding volcanic landscapes.

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