A car travels at the foot of the Cotopaxi Volcano, some 60 kilometers south of Quito, Ecuador, Oct. 1, 2013. The Cotopaxi Volcano, one of the highest active volcanoes in the world, is the second highest mountain in Ecuador with a height of 5,896 meters. (Xinhua/Liang Junqian)

Visitors climb the Cotopaxi Volcano, some 60 kilometers south of Quito, Ecuador, Oct. 1, 2013. The Cotopaxi Volcano, one of the highest active volcanoes in the world, is the second highest mountain in Ecuador with a height of 5,896 meters. (Xinhua/Liang Junqian)

Visitors climb the Cotopaxi Volcano, some 60 kilometers south of Quito, Ecuador, Oct. 1, 2013. The Cotopaxi Volcano, one of the highest active volcanoes in the world, is the second highest mountain in Ecuador with a height of 5,896 meters. (Xinhua/Liang Junqian)

Photo taken on Oct. 1, 2013 shows the Cotopaxi Volcano, some 60 kilometers south of Quito, Ecuador. The Cotopaxi Volcano, one of the highest active volcanoes in the world, is the second highest mountain in Ecuador with a height of 5,896 meters. (Xinhua/Liang Junqian)

A fox is seen at the mountainside of the Cotopaxi Volcano, some 60 kilometers south of Quito, Ecuador, Oct. 1, 2013. The Cotopaxi Volcano, one of the highest active volcanoes in the world, is the second highest mountain in Ecuador with a height of 5,896 meters. (Xinhua/Liang Junqian)