Volcano Cotopaxi is seen in Quito, capital of Ecuador, on Sept. 29, 2012. With an altitude of 5,897 meters, Cotopaxi is one of the world's highest volcanoes. Photo: Xinhua
Volcano Cotopaxi is seen in Quito, capital of Ecuador, on Sept. 29, 2012. With an altitude of 5,897 meters, Cotopaxi is one of the world's highest volcanoes. Photo: Xinhua