National Geographic : 1966 Feb
Nuzzling her newborn calf, a mother llama welcomes it into a world of toil. Llamas provide highlanders with wool, milk, meat, and transport. Ancient Andean peoples domesticated this cousin of the camel. Pack train of llamas, loaded with dung for fuel, picks its way across the crumpled, treeless highlands. Bearing an equal burden, the herder hisses com mands to his sole companions on the trek. Such caravans also freight grain, tin ore, and blocks of rock salt.