The Orosí Volcano, in Spanish the , is an inactive volcano in Costa Rica

Costa Rica

Costa Rica , officially the Republic of Costa Rica is a multilingual, multiethnic and multicultural country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west and the Caribbean Sea to the east....

, situated in the Cordillera de Guanacaste

Cordillera de Guanacaste

The Cordillera de Guanacaste, also called Guanacaste Cordillera, are a volcanic mountain range in northern Costa Rica near the border with Nicaragua. The mountain range stretches 110 km from northwest to the southeast and contains mostly complex stratovolcanoes...

 near the border with Nicaragua

Nicaragua

Nicaragua is the largest country in the Central American American isthmus, bordered by Honduras to the north and Costa Rica to the south. The country is situated between 11 and 14 degrees north of the Equator in the Northern Hemisphere, which places it entirely within the tropics. The Pacific Ocean...

. The area around the volcano is a popular tourist destination, especially for more ecologically minded tourists due to its biodiversity, including the Guanacaste National Park

Guanacaste National Park (Costa Rica)

Guanacaste National Park, in Spanish , is part of the Area de Conservación Guanacaste World Heritage Site, is a National Park in the northern part of Costa Rica, from the slopes of the Orosí and Cacao volcanoes west to the Interamerican Highway where it is adjacent to the Santa Rosa National Park....

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At the base of the volcano is the Maritza Biological Station, which researches aquatic biology, founded in conjunction with Stroud Water Research Center, Avondale, Pennsylvania, USA.