A rare animal whose fiber makes the world's most costly and most exquisite cloth, surpassing all others in fineness and beauty. It is found in an almost inaccessible area of the Andes Mountains, at altitudes between 16,000 and 19,000 ft (4876 and 5791 m). The vicuna, one of the wildest of animals, is less than 3 ft (0.9 m) high and weighs 75–100 lb (33.7–45 kg).