Costa Rica is part of the Pacific Fire Ring Circle. It is a very volcanic country and over 200 volcanic formations have been identified on its territory. Less than a dozen of them are considered as active volcanoes. The most visited volcanoes of the country (and also the most impressive) are the Poas, Arenal, Irazú, Turrialba, Miravalles, Tenorio, Barva, Rincón de la Vieja and the Orosi Volcano.