Cerro Machín

About

Cerro Machín is a stratovolcano located in Tolima Department, Colombia. Considered the most dangerous active volcano of Colombia, Cerro Machin is a volcanic plug that is approximately the same age (1, 000, 000+ years) as the Ruiz-Tolima Massif and has the appearance of being part of that volcanic system. Cerro Machín is a 2.4km-wide tuff ring volcano. It was last known to actively erupt 800 years ago. Its sisters are Nevado del Tolima, 17,060 feet (5, 200 m); Santa Isabel, 16,240 feet (4, 950 m), Nevado del Ruiz, 17,457 feet (5, 321 m), plus nine other lesser volcanoes and a 10,000 feet (3, 000 m) volcanic South Wall containing in excess of thirty volcanic domes.

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