Res Gestae

In these Cottian Alps, which begin at the town of Susa, there rises a lofty ridge, which scarcely anyone can cross without danger.

For as one comes from Gaul it falls off with sheer incline, terrible to look upon because of overhanging cliffs on either side, especially in the season of spring, when the ice melts and the snows thaw under the warmer breath of the wind; then over precipitous ravines on either side and chasms rendered treacherous through the accumulation of ice, men and animals descending with hesitating step slide forward, and waggons as well. And the only expedient that has been devised to ward off destruction is this: they bind together a number of vehicles with heavy ropes and hold them back from behind with powerful efforts of men or oxen at barely a snail’s pace; and so they roll down a little more safely. And this, as we have said, happens in the spring of the year.