caption: The image shows a close up of a rock wall with a lot of rocks on it, and in the center of the image there is a photo of a crevice. The crevice is composed of small, irregularly shaped rocks that are arranged in a pattern, with some of them overlapping each other. The rocks are of various sizes and colors, ranging from light gray to dark gray. The texture of the rocks is rough and bumpy, and the cracks are jagged and uneven.