clouds sky snow tree tree covered in snow winter snow covered tree trees abstract appearance bark coated colors colours covered damp extensive gray grey large lichen lichen-covered moist palm palm-tree palms spreading surface surfaces surfacing texture textured textures thick thin tree-trunk trunk autumn branches cones conifer conifers fall foliage green lichen covered pine pine cones pine needles pine tree rough tangled tree top turned twisted windswept christmas tree blue sky snow covered trees England laden oak Quercus stark Sussex white woodland