Merian C. Cooper (American aviator [Spy], United States Air Force and Polish Air Force officer, adventurer, screenwriter, film director, and producer, Cooper's most famous film was the 1933 movie King Kong) Ernest Schoedsack, and Marguerite Harrison, with intertitles by Richard Carver and Terry Ramsaye.

 It documents the caravan route from Angora (modern-day Ankara, Turkey) to the Bakhtiari lands in Persia (western Iran in Chaharmahal and Bakhtiari Province and the eastern part of Khuzestan).

They then follow Haidar Khan as he leads 50,000 of his people and countless animals on a harrowing trek across the Karun River and over Zard Kuh, the highest peak in the Zagros Mountains. It was the first film made by the team of Cooper and Schoedsack, who went on make King Kong (1933) and many other films.

 Cooper was a writer doing research for the American Geographical Society. Schoedsack was a cameraman.

Funding was provided by a loan of $5,000 by Cooper's father and brother. Another $5,000 was provided by Marguerite Harrison.

In filming the journey, Cooper, Schoedsack, and Harrison became the first Westerners to make the migration with the Bakhtiari.