fir tree fir-cone fir-needle green nature needle pine cone plants Spruce Tree tree bark cones Fir firs spring trees branch abstract branches colors colours decay fir-tree forest funghi fungi moss mushroom stub trees brake clouds fern hills horizon nursery sky summer underwood wideness autumn cliff erosion geology grey huge landscape mountain mountains ripples rock rocks sandstone waves birch brown bushes distance fog outlook peaceful snow snowy sunshine winter bush cork ground hill hillside pebble pebbles pine pines stone stones trunk wood woods atmospheric berlin cold freeze frost frosty germany grunewald ice idyll idyllic lonely natural path perspective quiet relax relaxation rest silence walkway background christmas foliage leaf leaves texture