The image shows a close-up of a wall made of sandstone. The wall appears to be old and weathered, with visible cracks and crevices. The sandstone is a light beige color and has a rough texture. In the bottom right corner of the image, there is a hand holding a ruler, which is used to measure the height of the wall. The ruler has a black and white striped pattern on it. The image is taken from a top-down perspective, looking down on the wall and the hand.