Crater still smouldering after tourists flee strongest volcanic blast in four years - Footage shared on social media shows huge clouds of black smoke after the eruption

Italy's Mount Etna on the island of Sicily erupted Monday, spewing ash and hot lava that sent tourists fleeing from the 10,925-foot mountain, which is one of the world's most active volcanoes.

Mount Etna erupted early Monday morning, sending plumes of volcanic ash into the air above Sicily and forcing tourists to flee as seismic activity surged.