natural tree monument dab bartus oak, quercus robur, in bory tucholskie coniferous forest in pomerania region of poland

activity bartus bio bor bory branch charzykowy chojnice coniferous conservation dab diversity europe flora foliage forest green greenery ground hollow iglasty landmark landscape leaf litter monument monumental national natural nature oak old outdoor park poland polska pomerania pomorskie pomorze quercus reserve rezerwat robur swornegacie thicket tourism touristic travel tree trunk tucholskie vegetation wood wooded