The image shows a close-up of a stone wall with a rough texture. The wall appears to be old and weathered, with cracks and crevices visible on the surface. The color of the wall is a warm, earthy brown, with some areas appearing darker and others lighter. In the center of the image, there is a white ruler with black markings on it, which is used to measure the height of the stone wall. The ruler is placed on a wooden surface, and the background is blurred, making the wall stand out.