This cordillera of the Andes must be one of the grandest in the world, for it commences at the straits of Magallanes, extends along the whole extent of this kingdom of Peru, and traverses so many provinces that they cannot be enumerated. It is covered with high peaks, some of them well covered with snow, and others with mouths of fire. The forests on these mountains are very difficult to penetrate by reason of their thickness, and because during the greater part of the year it rains. The shade is so dark that it is necessary to go with much caution, for the roots of the trees spread out and cover all the ground, and when it is desired to pass with horses, much labour is necessary in making roads. It is said among the Orejones of Cuzco, that Tupac Ynca Yupanqui traversed these forests with a large army, and many of the tribes who inhabited them were very difficult to conquer and bring under his sway. In the skirts of the mountains towards the South Sea, the natives were intelligent; they were all clothed, and were ruled by the laws and customs of the Yncas. But, towards the other sea, in the direction of the sun-rise, it is well known that the inhabitants are of less understanding and reason.