It was one of the largest eruptions of the last century. Getty Images The Tungurahua volcano in Ecuador erupting in 2016 However in other instances, such as the eruption of Mount Ontake in Japan ...

21 from the volcano in the Andean mountain range, just 45 kilometers southeast of Quito, so a full eruption is expected anytime soon. The Cotopaxi is one of the most active volcanoes in Ecuador.