The deep redwood canopy is a vertical Eden filled hanging gardens of ferns, reefs of lichens, small animals, and all sorts of plants, including thickets of huckleberry bushes and small trees actually growing on the branches of giant redwoods. There are massive redwood limb systems fused into flying buttresses and carved into “fire caves.” Thick layers of soil sitting on limbs harbor animal and plant life unknown to science. Humans move through the deep canopy suspended on ropes, far out of sight of the ground, knowing that the price of a small mistake may be a plunge to one's death.