 Quercus subur, cork oak, the most unique tree in the world of forestry. The cork oak is the only tree that can have its entire bark removed, causing no harm to the tree. This bark, from which thousands of natural cork products are made, grows back and is re-harvested every nine years for up to 150 years. Cork harvesting is the most sustainable and environmental forestry in the world. Our team traveled to Extremadura, one of Spain's abundant cork forest regions, to film the harvest from the first-person perspective. Having apprenticed for years, skilled harvesters worked to remove the bark, leaving the tree's core layer unharmed. Every tree is inspected prior to harvesting for vigor and bark thickness, to ensure the continued health of the tree and the highest quality cork. Returning every nine years to the same trees, the harvesters have built a personal relationship with each tree. This symbiotic relationship helps to preserve the forest biodiversity, as well as the economic and cultural well-being of the people of the cork forests. By supporting companies that use and sell cork products, you are actually making a direct contribution to the preservation of these forests.