marks with pink paint on tree trunks, wild vegetation in blurred background

bark brown closeup color concept conservation control cut damage deforestation disease duramen ecology environment environmental europe forest forestation forestry green hardwood heartwood industry limburg log lumber maintenance mark marker material nature old outdoor paint park pattern pine reforestation renewable rough rural surface texture timber tree trunk wood wooden woodland woods marks pink trunks wild vegetation blurred background sunny day dutch reserve strijthagerbeekdal netherlands cutting dangerous trees protection