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Home > Volcanoes > Central America and Carribean > Costa Rica

Rincón de la Vieja | Arenal | Poas | Irazu | Turrialba

Latest news:

Saturday, Dec 15, 2007

Arenal volcano (Costa Rica), activity update: mild strombolian activity, small lava flow on S flank

Arenal, one of the few volcanoes with near-constant activity, continues to be in mild strombolian-type activity. During the past weeks, activity was from Crater C and consisted of gas emissions, sporadic Strombolian eruptions, small lava flows on the S flank, and occasional avalanches from lava-flo...

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Turrialba volcano (Costa Rica), activity update: strongly increased fumarolic activity

The volcanic unrest at Turrialba seems to intensify, and signs of a possible new eruption in the near to medium future are getting stronger: According to OVSICORI-UNA a gas-and-steam plume from Turrialba rose to an altitude greater than 5.3 km (17,400 ft) a.s.l. on 5 December. Fieldwork confirmed an...

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Volcanoes of Costa Rica

Map showing Costa Rica's most active volcanoes and the location of the plate boundary between the subducting Pacific and the overriding Carribean plate. (Base map created using Jules Verne UNAVCO map tool featuring Face of the Earth (TM)).

Costa Rica is a small country but has a lot of active volcanoes aligned like pearls on a chain, caused by the NE subduction of the Pacific tectonic plate under the Carribean plate.
Among the country's most active volcanoes are Arenal, Poás and Irazú volcanoes.