branch England english February Great Britain heathland nature Quercus petraea sessile oak Surrey tree trunk winter abstract art artwork backgrounds colors colours cracked cracks dark dead-wood edge edges gnarled grain grooves hard-wood layers lines lumber painted painting patterned patterns perspectives ridges rough shadows shape shaped shapes surface surfaced surfaces texture textured textures timber tree-trunk twisted uneven variations varieties wood wood-grain wrinkled wrinkles wrinkly bare close-up dry gray grey shade shades-of-colour backdrop background bole brown crust gullies peeling rind structure structures trees Betula birch Natural landscape twig white countryside direction path rural sign signpost trail black-and-white Canoe birch monochrome Monochrome photography plant snow woody plant bark dead drift wood old pattern tree trunk weathered alone conifer evergreen isolated lone one pine Pinus Scots single Sussex sylvestris