00:00When this arborist cut into the bark of a wild tree, it looked like a scene from a horror movie.
00:05Thick, crimson fluid, looking disturbingly like real human blood,
00:09immediately began gushing down the trunk.
00:12This isn't blood. It is an extreme botanical defense resin known as keno.
00:17Packed with concentrated antibacterial tannins, the tree actively pumps the red fluid to the wound.
00:23The sap rapidly oxidizes and coagulates,
00:26creating an airtight biological bandage that seals the wood from infection.
00:31Nature's most graphic, self-healing tree.