 However, such as the case with all other previous earthquakes, the great quake of 1915 was caused by the movement of and release of pent-up energy of an important tectonic fault.Like most other areas of Italy, Pescina has a diaspora still extant in the New World.The families of "Galli" and "Villanucci", which have had a presence in Pescina since at least 1880, have members in at least two American cities