Chris Horsley heads to Mount Etna, Europe's largest and most active volcano, as it experiences a period of heightened activity. He and the team investigate the mountains recent violent eruptions, hoping to scientifically document the chain of events in order to save future lives.

Chris Horsley heads to Mount Etna, Europe's largest and most active volcano, as it experiences a period of heightened activity. He and the team investigate the mountains recent violent eruptions, hoping to scientifically document the chain of events in order to save future lives.