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, whose stunning peak rises 11,014 feet tall and slopes toward the Ionian Sea, is a popular attraction for both hikers and tourists. Video footage obtained by CNN shows a tour group running downhill away from the explosion on June 2; Italian officials have confirmed that all hikers were evacuated safely.