泛滥之谜 20

The highlands are full of people, too.

They have exploited the rich soil here since the time of Ancient Egypt.

The rainy season turns the highlands into a busy patchwork of farmland.

This is one of the largest and oldest areas of cultivated land in Africa.

Inevitably, this great bounty attracts unwelcome visitors.

Ethiopian children play their part in protecting the family crops.

The flute is played to scare away animals, at least that's one theory.

Sometimes more direct action is necessary.

The rains continue for up to three months.

It may appear bleak

but in fact it's a time of celebration and thanksgiving for the highland farmers.

They're accustomed to the yearly rhythm

And they see the rains as a blessing.

Beneath their feet, the land is undergoing one final dramatic change.