birch trunk. close-up of birch bark. birch bark. damaged old tree bark. a wound on a wooden surface from a broken branch

america and background bark betulin birch black cells close cold cork cracked deciduous decoration dioecious environment europe family firewood forest forming frame group grove isolated log material mixed monoecious natural nature nobody north outdoors part pattern plant pollinated resinous rough rural species split stem substance surface tar texture timber tissue tree triterpenoid trunk white wind winter wood wooden