Unusual Characteristics
In the 1970s Etna erupted smoke rings, one of the first captured events of this type, which are extremely rare. This happened again in 2000.
Read more about this topic: Mount Etna
Famous quotes containing the word unusual:
“One idea is enough to organize a life and project it
Into unusual but viable forms, but many ideas merely
Lead one thither into a morass of their own good intentions.”
—John Ashbery (b. 1927)