Escursioni invernali sul'Etna
Volcanic activity of Mt. Etna during 1966 

Volcanic activity of Mt. Etna during 1966 

After the strong explosive and effusive activity in 1964, that reached its apex in the terminal eruption on the fourth of July (5, 6,13), the central crater of Mt. Etna and the subterminal North-East crater maintained for many months a state of relative calmness: from...