In the forests of Ratanakiri, an age-old gesture repeats itself, generation after generation: notching the trunk of a canopy giant to collect its fragrant sap. Caught between village subsistence, customary knowledge and mounting pressure from land concessions, the resin of Dipterocarpus — long known locally by its older spelling, Dichterocarpus — tells the story of an increasingly fragile balance between the mountain peoples and the forest that feeds them.