The image shows a close-up of an old, rusted metal hook attached to a stone wall. The hook appears to be old and weathered, with a rusted finish. It has a curved shape with a pointed end and a small loop at the top. The stone wall has a rough texture, with some cracks and crevices visible. On the right side of the image, there is a black and white striped ruler, which is likely used to measure the size of the hook.