The Saltmen of Tibet (1997)

Four men from a nomadic Tibetan tribe undertake their annual, ritualistic pilgrimage to a sacred salt lake. Salt gathered in this traditional fashion will be sold to provide the economic livelihood of the tribe for the coming year. The journey, necessary for the group's survival, also incorporates a number of rituals necessary for their culture to survive in the modern world.

Unfortunately the movie The Saltmen of Tibet is not yet available on HBO Max.