birch birch forest birch tree forest haunted forest nature protective area recreation area spring spring forest tree wood woodland backgrounds Bark Tree natural pattern outdoors birchs cottage forests trees village white biome branch Canoe birch plant swamp birch trunk twig woody plant autumn berlin birch trees countryside environment germany grunewald land landscape natural outland path perspective scene scenery sight sketch tall view walk wildwood woods birch-tree bush Harz high mountain precipice rock stone summer footpath sunlight way abstract bark betula pendula bumps dashes deciduous gray grey raised short stripes silver birch silver birch tree smooth texture textured tree trunk uneven birches Dirt Morning pine pines road spells sunny