Page:Roman History of Ammianus Marcellinus.djvu/87

355.] where it has an eastern aspect it is bounded by the Cottian Alps. In these mountains King Cottius, after the Gauls had been subdued, lying by himself in their defiles, and relying on the rugged and pathless character of the country, long maintained his independence; though afterwards he abated his pride, and was admitted to the friendship of the Emperor Octavianus. And subsequently he constructed immense works to serve as a splendid gift to the emperor, making roads over them, short, and convenient for travellers, between other ancient passes of the Alps; on which subject we will presently set forth what discoveries have been made.

3. In these Cottian Alps, which begin at the town of Susa, one vast ridge rises up, scarcely passable by any one without danger.

4. For to travellers who reach it from the side of Gaul it descends with a steepness almost precipitous, being terrible to behold, in consequence of the bulk of its overhanging rocks. In the spring, when the ice is melting, and the snow beginning to give way from the warm spring breezes, if any one seeks to descend along the mountain, men and beasts and wagons all fall together through the fissures and clefts in the rocks, which yawn in every direction, though previously hidden by the frost. And the only remedy ever found to ward off entire destruction is to have many vehicles bound together with enormous ropes, with men or oxen hanging on behind, to hold them back with great efforts; and so with a crouching step they get down with some degree of safety. And this, as I have said, is what happens in the spring.

5. But in winter, the ground being covered over with a smooth crust of ice, and therefore slippery under foot, the traveller is often plunged headlong; and the valleys, which seem to open here and there into wide plains, which are merely a covering of treacherous ice, sometimes swallow up those who try to pass over them. On account of which danger those who are acquainted with the country fix projecting wooden piles over the safest spots, in order that a series of them may conduct the