Miravalles Volcano

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Miravalles Volcano
Miravalles volcano.jpg
Miravalles Volcano in 1988
Highest point
Elevation 2,028 m (6,654 ft) [1]
Listing List of volcanoes in Costa Rica
Coordinates 10°44′54″N 85°09′10″W / 10.74833°N 85.15278°W / 10.74833; -85.15278Coordinates: 10°44′54″N 85°09′10″W / 10.74833°N 85.15278°W / 10.74833; -85.15278
Miravalles Volcano is located in Costa Rica
Miravalles Volcano
Miravalles Volcano
Parent range Cordillera de Guanacaste
Age of rock 1.5 Myr
Mountain type Stratovolcano
Last eruption September 1946[1]

The Miravalles Volcano is an andesitic stratovolcano in Costa Rica. The caldera was formed during several major explosive eruptions that produced voluminous dacitic-rhyolitic pyroclastic flows between about 1.5 and 0.6 million years ago. The only reported historical eruptive activity was a small steam explosion on the SW flank in 1946. High heat flow remains, and Miravalles is the site of the largest developed geothermal field in Costa Rica.[1]

The Miravalles Volcano reaches an elevation of 6,653 feet (2,023 m) and is the highest mountain in the Guanacaste Mountains. The heat from the volcano also helps power a geothermal energy plant at Las Hornillas, which is run by the Institute of Electricity.[2]