Yarsagumbu, l'or de l'Himalaya

Every spring, tens of thousands of men, women and children leave their villages for a dangerous trek to the high Himalaya to collect Yarsagumbu, a mysterious transmutation between plant and insect. Used in Chinese medicine, it is worth up to 60 000 USD a kilo, more than gold.

• Eric ValliDirector

• Andrew NgCast
• Dhan ShandraCast
• Jacques GamblinCast