Dion Cassius has left us a vivid picture of the memorable eruption of Vesuvius: “The events which occurred in Campania,” he says, “were calculated to arouse both fear and wonder; there, just as autumn was approaching, a great fire suddenly broke out. Mount Vesuvius is near the sea of Naples and contains a vast reservoir of fire. In former times the whole mountain was of the same height and the fire came from its very centre; for this is the only spot which is in combustion; the whole of the outside is, even to this day, exempt from fire. For this reason, since these portions still remain intact while those of the centre crumbled away and fell into dust, the surrounding peaks preserve their former elevation; while on another side the whole of the part ignited, having been worn away by time, has fallen in, leaving a cavity which, to compare small things with great, gives to the mountain the general appearance of an amphitheatre. On the top are trees and vines in great number, whilst the crater is the prey of fire and exhales smoke by day and flame by night, so that it might be supposed perfumes of every kind were being constantly burned within. This phenomenon is manifested sometimes with more, sometimes with less intensity; at times even cinders are thrown out when some great mass has fallen in and stones fly about, driven by the violence of the wind. Noises and rumblings proceed from the mountain, and it must be observed that the apertures of the crater, which are some distance apart, are narrow and hidden.
“Such is Vesuvius, and these manifestations are repeated nearly every year. But the prodigies which occurred in earlier days, though to those who gave them continued attention they appeared more than ordinary, may, even if we take them all together, be regarded as trivial in comparison with the occurrences of this period. This is what actually happened. Men, numerous and huge, of a height exceeding that of any human being and such as the giants are depicted, were seen to wander day and night, now on the mountain, now in the surrounding district and in the towns, and sometimes even walking in the air. Then suddenly there came winds and violent tremblings of the ground, so that the whole plain shuddered and the crests of the mountains leaped. At the same time noises arose, some subterranean, resembling thunder, others, coming from the ground, were like bellowings; the sea roared, and the sky, in echo, answered to its roarings. After this a fearful crash, like mountains hurtling against one another, suddenly made itself heard; then first stones were thrown out with such force that they reached the summit of the mountain; then huge flames and thick smoke which darkened the air and entirely hid the sun as in an eclipse.
Columns of the Temple of Jupiter, Rome
“Night succeeded to day and darkness to light; some fancied that the giants were reawakening to life, for many phantoms in their likeness were seen in the smoke and moreover a noise of trumpets was heard; others thought that the whole world was about to be swallowed up in chaos or in fire. Therefore some fled from their houses into the streets; others from the streets into their houses, from the sea to the land and from the land to the sea, devoured by fear and feeling that anything at a distance was safer than their present condition. At the same time a prodigious quantity of cinders was thrown up and filled the earth, the sea, and the air; other scourges also descended indiscriminately upon mankind, on the country and on the herds, destroyed the fishes and the birds, and moreover engulfed two whole cities, Herculaneum and Pompeii, with all the people who chanced to be seated in the theatre. Finally there was so much dust that some of it penetrated as far as Africa, Syria, Egypt, and even Rome itself; darkening the air above that city and covering the sun. There it gave rise to a great panic which lasted several days, for none knew what had happened and none could guess what it was; men fancied that everything had been reversed, that the sun was about to disappear into the earth and the earth to be shot up into the sky.
[79-80 A.D.]