The most violent eruption was in March, 1669. The mountain erupted lava for several days, which destroyed several nearby villages and the city walls of Catania.
Lava fountain, ash clouds, and gas being released into the air.
No one live close enough to the volcano to be hurt by it, but if tourist are there they can get hurt. They warn people about the volcano. Most people take a tour bus.
Mount Etna is one of the most active volcanos and I think it will keep erupting and no one should get hurt by it. Based on the evidence Mount Etna will keep erupting about 200 times a year.
Mount Etna will most likely keep erupting for over more then 2,000 years.