It was a journey of considerable difficulty. Two thirds of the route lay along the table-land of the Cordilleras, intersected occasionally by crests of the mountain range, that imposed no slight impediment to their progress. Fortunately, much of the way, they had the benefit of the great road to Cuzco, and "nothing in Christendom," exclaims Hernando Pizarro, "equals the magnificence of this road across the sierra."4 In some places, the rocky ridges were so precipitous, that steps were cut in them for the travellers; and though the sides were protected by heavy stone balustrades or parapets, it was with the greatest difficulty that the horses were enabled to scale them. The road was frequently crossed by streams, over which bridges of wood and sometimes of stone were thrown; though occasionally, along the declivities of the mountains, the waters swept down in such furious torrents, that the only method of passing them was by the swinging bridges of osier, of which, till now, the Spaniards had had little experience. They were secured on either bank to heavy buttresses of stone. But as they were originally designed for nothing heavier than the foot-passenger and the llama, and, as they had something exceedingly fragile in their appearance, the Spaniards hesitated to venture on them with their horses. Experience, however, soon showed they were capable of bearing a much greater weight; and though the traveller, made giddy by the vibration of the long avenue, looked with a reeling brain into the torrent that was tumbling at the depth of a hundred feet or more below him, the whole of the cavalry effected their passage without an accident. At these bridges, it may be remarked, they found persons stationed whose business it was to collect toll for the government from all travellers.5The Spaniards were amazed by the number as well as magnitude of the flocks of llamas which they saw browsing on the stunted herbage that grows in the elevated regions of the Andes. Sometimes they were gathered in inclosures, but more usually were roaming at large under the conduct of their Indian shepherds; and the Conquerors now learned, for the first time, that these animals were tended with as much care, and their migrations as nicely regulated, as those of the vast flocks of merinos in their own country.6The table-land and its declivities were thickly sprinkled with hamlets and towns, some of them of considerable size; and the country in every direction bore the marks of a thrifty husbandry. Fields of Indian corn were to be seen in all its different stages, from the green and tender ear to the yellow ripeness of harvest time. As they descended into the valleys and deep ravines that divided the crests of the Cordilleras, they were surrounded by the vegetation of a warmer climate, which delighted the eye with the gay livery of a thousand bright colors, and intoxicated the senses with its perfumes. Everywhere the natural capacities of the soil were stimulated by a minute system of irrigation, which drew the fertilizing moisture from every stream and rivulet that rolled down the declivities of the Andes; while the terraced sides of the mountains were clothed with gardens and orchards that teemed with fruits of various latitudes. The Spaniards could not sufficiently admire the industry with which the natives had availed themselves of the bounty of Nature, or had supplied the deficiency where she had dealt with a more parsimonious hand.