| Miravalles Volcano | |
| Elevation M: | 2028 |
| Elevation Ref: | [1] |
| Map: | Costa Rica |
| Label Position: | left |
| Listing: | List of volcanoes in Costa Rica |
| Location: | Costa Rica |
| Range: | Cordillera de Guanacaste |
| Coordinates: | 10.7483°N -85.1528°W |
| Type: | Stratovolcano |
| Age: | 1.5 Myr |
| Last Eruption: | September 1946 |
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 south-western 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 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]