It was a struggle for life against death.
Below them, certain starvation.
Ahead of them, grass and life.
For thousands of years, nomadic tribes have migrated across Persia
to find summer pastures for their herds of animals.
In 1924, three Americans accompanied the Bhaktiari tribe on their hazardous trek.
For three days, they passed before our cameras.
One continuous line that seemed to have no end.
Their film reveals the courage, ingenuity and struggle for survival of a brave people.
Land Beyond the Mountains.
Next in Travellers in Time.
8 o'clock Wednesday on ABC.