The Puyehue-Cordón Caulle volcano in Chile erupted on June 4, 2011, after decades of dormancy, resulting in a significant ash plume that forced the evacuation of approximately 4,000 residents from surrounding areas. Lightning and volcanic ash affected locations both in Chile and Argentina, disrupting air travel and impacting local communities with falling ash. The eruption raised concerns about possible landslides and prompted emergency measures in response to the natural disaster.