The image displays a close-up, vertical composition of tree bark, filling the entire frame

The image displays a close-up, vertical composition of tree bark, filling the entire frame. The bark exhibits a rugged, fissured texture with prominent vertical ridges and deep, irregular grooves. The coloration is predominantly greyish-brown, interspersed with patches of lighter grey and greenish-grey, consistent with lichen or moss growth. Darker crevices are visible within the furrows. Small, dark, irregular depressions or holes are present within some of the bark's indentations. No human figures, animals, or man-made objects are present. No actions or interactions are depicted. The environment is natural and arboreal. The specific location within the city of Viseu, Portugal, cannot be determined from the visual information presented.