Of all his remarkable exploits, none raised greater admiration than that which he put in practice against the Characitanians. These are a people beyond the river Tagus, who inhabit neither cities nor towns, but live in a vast, high hill, within the deep dens and caves of the rocks, the mouths of which all open towards the north. The country below is of a soil resembling a light clay, so loose as easily to break into powder, and is not firm enough to bear any one that treads upon it, and if you touch it in the least, it flies about like ashes or unslaked lime. In any danger of war, these people enter their caves, and carrying in their booty and prey along with them, stay quietly within, secure from every attack. And when Sertorius, leaving Metellus some distance off, had placed his camp near this hill, they slighted and despised him, imagining that he retired into these parts to escape being overthrown by the Romans. And whether out of anger and resentment, or out of his unwillingness to be thought to fly from his enemies, early in the morning he rode up to view the situation of the place. But finding there was no way to come at it, as he rode about, threatening them in vain and disconcerted, he took notice that the wind raised the dust and carried it up towards the caves of the Characitanians, and the northerly wind, which some call Caecias, prevailing most in those parts, coming up out of moist plains or mountains covered with snow, at this particular time, in the heat of summer, being further supplied and increased by the melting of the ice in the northern regions, blew a delightful, fresh gale, cooling and refreshing the Characitanians and their cattle all the day long. Sertorius, considering well all circumstances in which either the information of the inhabitants, or his own experience had instructed him, commanded his soldiers to shovel up a great quantity of this light, dusty earth, to heap it together, and make a mound of it over against the hill in which these barbarous people lived, who, imagining that all this preparation was for raising a mound to get at them, only mocked and laughed at it. However, he continued the work till the evening, and brought his soldiers back into their camp. The next morning a gentle breeze at first arose, and moved the lightest parts of the earth, and dispersed it about as the chaff before the wind; but when the sun got higher, and the strong, northerly wind had covered the hills with the dust, the soldiers came and turned this mound of earth over and over, and broke the hard clods in pieces, whilst others on horseback rode through it backward and forward, and raised a cloud of dust into the air; then with the wind the whole of it was carried away and blown into the dwellings of the Characitanians, all lying open to the north. And there being no other vent or breathing-place than that through which the Caecias rushed in upon them, it quickly blinded their eyes, and filled