1857 Basilicata earthquake
…the central point of the fissure, the theoretical seismic centre, was 9.25 kilometres (5.75 mi) deep. Mallet located his epicentre near the village of Caggiano, not far from Polla, but later examination of his data suggested that there was a second focus near Montemurro, about 40 kilometres (25 mi) to the…