Volcán Santo Tomás
Encyclopedia
Volcán Santo Tomás is a stratovolcano
Stratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

 in southern Guatemala
Guatemala
Guatemala is a country in Central America bordered by Mexico to the north and west, the Pacific Ocean to the southwest, Belize to the northeast, the Caribbean to the east, and Honduras and El Salvador to the southeast...

. It is also known as "Volcán Pecul", or as "Cerro Zunil" the name of its youngest and most prominent dome which was last active approximately 84,000 years ago (K-Ar dating).

Geothermal
Geothermal
Geothermal is related to energy and may refer to:* The geothermal gradient and associated heat flows from within the Earth- Renewable technology :...

 activity can be observed in the form of Solfataras and thermal springs which are located on the west of the ridge between Santo Tomás and Zunil.
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