4 Costa Rican volcanoes on close watch after M 7.6 earthquake
At least four of the seven active volcanoes in Costa Rica, Arenal (Alajuela), Rincon de la Vieja (Guanacaste), Turrialba (Cartago) and Poás (Alajuela), are in the crosshairs of scientists after 7.6 magnitude earthquake that struck the country on September 6,