Volcanic Activity

Ecuador is a location with many volcanoes that are active but also inactive. Currently, there are a total of 25 volcanoes within the region itself. Due to subduction under the Nazca Pacific oceanic plate, (located under the continental plate of South America) these volcanoes belong to the Northern Volcanic Zone of the Andres.
The largest volcano is known as Chimborazo, a stratovolcano which is also known to be Ecuador's highest volcano. Recordings show this volcano has erupted at least 7 times within the past 10,000 years. Many have thought this volcano is currently dormant, but recent studies show that this volcano is in fact active.
Recently, Ecuador's Institute of Geographics (IGPEN) reported increased seismic activity at the Cayambe volcano. This is also a massive stratovolcano, located in the Northern part of Ecuador, near Quito. On June 5, 2016 geographers noticed the seismicity of the quake began to increase. According to Volcano Discovery, a seismic swarm of 2 300 earthquakes were recorded by the end of the month.
 Only one volcano known as Cotopaxi has actually erupted in Ecuador in the past 140 years. But this volcano is known to be one of the most dangerous in the world because it is surrounded by a densely populated area. After the Cotopaxi volcano erupted, surgical masks were distributed across a city of 2.3 million. Also officials became more alert in case of future events and are currently monitoring the volcano closely. If prompted to, authority's can have the city evacuated before an eruption.

References:
https://www.volcanodiscovery.com/cayambe.html

https://watchers.news/2016/12/07/cayambe-volcano-swarm-ecuador-2016/

http://www.telegraph.co.uk/news/worldnews/southamerica/ecuador/11804694/Volcano-erupts-in-Ecuador-for-the-first-time-in-140-years.html