Τῇ δ’ ἐπαύριον ἀναζεύξας ἐνήρχετο τῆς καταβάσεως. ἐν ᾗ πολεμίοις μὲν οὐκέτι περιέτυχε πλὴν τῶν λάθρᾳ κακοποιούντων, ὑπὸ δὲ τῶν τόπων καὶ τῆς χιόνος οὐ πολλῷ λείποντας ἀπέβαλε τῶν κατὰ τὴν ἀνάβασιν φθαρέντων. οὔσης γὰρ στενῆς καὶ κατωφεροῦς τῆς καταβάσεως, τῆς δὲ χιόνος ἄδηλον ποιούσης ἑκάστοις τὴν ἐπίβασιν, πᾶν τὸ παραπεσὸν τῆς ὁδοῦ καὶ σφαλὲν ἐφέρετο κατὰ τῶν κρημνῶν.
(Polybius, Hist. 3.54.4-5)
Next day he broke up his camp and began the descent. During this he encountered no enemy, except a few skulking marauders, but owing to the difficulties of the ground and the snow his losses were nearly as heavy as on the ascent. The descending path was very narrow and steep, and as both men and beasts could not tell on what they were treading owing to the snow, all that stepped wide of the path or stumbled were dashed down the precipice. (tr. W.R. Paton)