According to Italian media, Pompeii has at least ten misfires from World War II. Those were probably bombs dropped by Allied planes.
In August 1943, Allied forces accidentally dropped a total of 165 bombs on Pompeii, in nine separate air operations. Of these, 96 were located and disarmed. Others of them either exploded or are still unexploded.
So far, out of 66 ha of the total Pompeii area, only 44 have been explored so far. Preliminary report of specialists suggests that there are still unexploded mounds on the remaining undiscovered 22 ha.
However, as Pompeii authorities indicate, there is no danger for tourists.