Mount Etna, the tallest and most active volcano in Europe, erupted on Monday on the Italian island of Sicily. Dramatic video footage shared on social media showed tourists fleeing down the side of the mountain as a thick volcanic cloud intensified above them.

Italy's Mount Etna, Europe's tallest volcano, erupted Monday, sending ash and rock into the air. We show you where.

MILAN (AP) — Sicily’s Mount Etna put on a fiery show Monday, sending a cloud of smoke and ash several miles into the air, but officials said the activity posed no danger to the population. The level of alert due to the volcanic activity was raised at the Catania airport, but no immediate interruptions were reported.