the trunk of an elm attacked by parasites. the texture of the bark of ulmus carpinifolia in the winter season

wood soil brown carving rock trunk tree leaf geology wall art formation iron temple pattern food flooring ulmus carpinifolia illness dying science diseased dead biology elm beetle dutch insect material bark nature background natural forest old outdoors white texture timber environment spring trees wild detail outdoor black green landscape woods wooden naturally close-up dry textured spotted rodent ecology trunks disaster log attacked parasites winter season shapes worm surface