Image courtesy Jesse Allen and Robert Simmon, EO-1/NASA
A plume of white ash spreads from an active vent in a satellite picture of the erupting Puyehue-Cordón Caulle volcano complex in Chile. The plume towers about 2.8 miles (4.5 kilometers), and high winds are carrying ash 75 to 160 miles (120 to 250 kilometers) from the vent, disrupting air travel.
Puyehue-Cordón Caulle started erupting in early June, and this image was taken October 22 by NASA’s Earth Observing-1 (EO-1) satellite. The almost five months of activity has coated nearby lakes as well as the neighboring high plains of Argentina in gray ash.

Photograph by Ricardo Mohr, My Shot
A cloud of lightning-topped ash rises toward a starry sky during the June eruption of southern Chile’s Puyehue-Cordón Caulle volcano complex in a picture submitted to My Shot in October. The summer eruption grounded flights in Chile and neighboring Argentina.
This month officials began evacuating people from the immediate vicinity of the Hudson Volcano, 470 miles (756 kilometers) south of Puyehue-Cordón Caulle, according to the Associated Press. Recent releases of steam and ash from the volcano have had authorities in Chile and Argentina on high alert, AP reports.
(Source: National Geographic)