Again, you reach the edge of a cliff, through the deep, narrow valley between which and the cliff opposite pours a furious torrent, which, resounding louder and louder as it is approached, now drowns all other sounds in its despotic roar. But, fearful as it looks, it must be crossed. Some of these torrents are spanned by bridges; but most of them are so impetuous, especially in the rainy season, that bridges even of stone would be undermined, and those of timber would be swept away like wisps of straw. You must now trust to the sagacity of your mules or horses. You descend the precipitous side of the cliff, seeming to yourself as if about to fall headlong into the torrent; but after a painful and perilous jaunt, you reach its level. Its roar now confuses and nearly stuns you. Each side is more or less precipitous, and you seem at the mercy of the furious tide, while jutting rocks above seem just ready to be loosened by some convulsion, and to crush you with their merciless weight: meantime, your horse stands unmoved by the peril before or above him, apparently deaf to the noise of the torrent, and quietly surveys the rapids, as if to select the safest point to cross. Disturb him not. He takes his time, and places one foot and then another in the torrent. As he reaches the main current, he trembles, not with fear, but with the effort to keep himself from being swept against the rocks. He may be able to keep his footing and to walk across, though panting and shaking at every step; or the stream may be so deep that he is forced to swim. If so, he bears up _manfully_ (if one may say so) against the rushing force, and at last scrambles up the least steep peak of the opposite bank, bearing you more dizzy than he is. But the bank itself is only the foot of a ridge as precipitous as that which you descended to reach the stream. Quietly, patiently, surely the horse ascends. A sudden misstep or unwary slip among the loose stones of the path would send you far backward into the torrent which you have just escaped. This very seldom happens, for the horses and mules have been well trained for the service. In all the perils, the horse or mule is a safer guide than you. Give him a free rein, and he will bear you up the hardest, roughest, steepest places.