Smoke billows from the Mount Etna, Europe's tallest active volcano, Sicily, Saturday, Nov. 23, 2013. (AP Photo|Carmelo Imbesi)

Smoke billows from the Mount Etna, Europe's tallest active volcano, Sicily, Saturday, Nov. 23, 2013. (AP Photo/Carmelo Imbesi)

MILAN— Mount Etna, Europe's most active volcano, has erupted again, showering volcanic ash on towns dotting the mountain's slopes and nearby Taormina.

The eruption Saturday did not force any evacuations, but a highway was closed for half an hour as a precaution. Authorities also briefly closed two of four air corridors serving the nearby Catania airport but air traffic was not interrupted.

Etna erupts occasionally. Its last major eruption occurred in 1992.

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