The image shows a close-up of a beige-colored rock surface. The rock appears to be rough and uneven, with small cracks and crevices visible. On the right side of the image, there is a white card with black and white squares and rectangles arranged in a grid-like pattern. The squares are of different colors, including red, orange, yellow, green, blue, purple, and black. The card also has a barcode and some text on it. The text on the card reads "8 cm".