This whole area is much like a rain forest.  Some of the are is actually a rain forest.  The coast butts up to the steep cliff like edges in many areas with the changes from the bottom to the top create this rain forest climate.  Or at least that is my theory.  I have a nice nature hike that I can take along a river along a coast line with just such an area.  The trees have so much moss covering them they are more like giant trolls with snot and sagging arms.  These are vast trees, amazingly large and old.  The older the more moss the more gnarled from the harsh climate of the the edge of the world it feels like at times with the fog lingering on the cliffs with only the haunting of the crashing waves on the shore below to know exactly how high you are.