boulder current England forest Great Britain green landscape moss mossy natural nature river rock spring stream tree trees uk water wood woodland autumn blue sky bushes clouds field germany grass hills lindlar meadow clear lake Lakeshore November pine trees reed shore sky sunlight sunset canada cliff drop flow gorge summer altitude conifer height high lone mountain peak Rockies Rocky Mountains steep ecology ferns habitat path steps temperate trail Vancouver Island wild wooden cold evening fall low temperatures Sctots Pine spruce winter woods fallen HDR leafs Nyberg october red scenery unspoilt ghyll Mud muddy path through the woods shadows sunny sunshine Sussex track trunk