After some time, the world forgot about the people in the valley.
But the valley people did not worry. Life there was easy: the valley had no dangerous insects or dangerous animals. Instead, it was full of useful plants, clean water, and gentle llamas.
The valley people also did not worry much about becoming blind. It happened slowly. At first, the old people lost their eyesight; then the not so old. Soon, every newborn child was born blind. And when sight finally died out, the valley people lived on. They did not need their eyes to make a fire, to cook, or to move around. The valley was their home, and they knew every part of it. Generation after generation lived without the use of their eyes. They forgot many things but learned many others. Decades passed. The valley people were happy. Then a stranger came to the valley – a man from the outside world, a mountaineer.
His arrival changed everything.