Mount Etna's volcanic outbursts have been a constant companion for Sicilians for more than 2,000 years, but geoscientists are still trying to solve the mystery of why Etna erupts so frequently.
Mount Etna's volcanic outbursts have been a constant companion for Sicilians for more than 2,000 years, but geoscientists are still trying to solve the mystery of why Etna erupts so frequently.