Observing the daily life of the Bakthiari in the western moutains of Iran, Ariane Lorrain and Shahab Mihandoust explore the ancestral tradition of natural wool dyeing and carpet making.  With affection and respect towards their magnificent  protagonists, the filmmakers compose long moments of tranquility which give birth to exquisite visual poetry, as vibrant and mystical as the colours produced in the dyeing vats. Far from idealizing this tedious work  which disappears little by little at the expense of cheap, industrial merchandise, the wise words of theses artisans illustrate the difficulties and joys of the precise and meditative tasks which give life to these works of art.  Zagros deploys itself as a love letter to a human tradition full of resilience.