This eruption sent a large amount of volcanic material to areas up to 40 km (25 mi) away. On October 29, 2014, at around 10:10, a tremor started and kept constant, until a phreatic eruption occurred around 23:10 at the west opening that appeared in January 2012.On October 17, 2014, the quantity of tremors increased from around 50-100 a day, to 200 a day.In July 2013 researchers found that tremors around the area increased from about twenty earthquakes a day, to up to thirty per hour.On May 21, 2013, at 08:52, a gas explosion widened several openings near the main crater that appeared in 20.On April 12, 2012, a small eruption occurred.On January, 2012 a new opening on the west of the crater was created after a phreatic eruption.Two villages, La Central and El Retiro, were evacuated. On January 8, 2010, a phreatic eruption occurred, creating a new opening near the crater on the southwest, and the temperature increased from 200 to 600 ☌ (392 to 1,112 ☏).The National Park area opened for visitors was closed from 2009 to 2011.On March 31, 2017, the volcano started to show some activity with ash eruptions.The volcanic activities have increased since 2005.
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