Vulkanen van Colombia (16 volcanoes)Azufral | Cerro Bravo | Cerro Negro de Mayasquer | Cumbal | Doña Juana | Galeras | Machin | Nevado del Huila | Nevado del Ruiz | Nevado del Tolima | Petacas | Puracé | Romeral | San Diego | Santa Isabel | Sotará
Colombia has 15 volcanoes considered active. The volcanoes are related to the subduction zone that runs along the whole of America's western plate margin. Colombia's volcanoes are part of the northern Andes and lie at the junction of 3 tectonic plates, the Nazca, Caribbean and South American plates.
Map of Colombia's major volcanoes (USGS)