caption: The image shows a small mammillaria cactus in the middle of a rocky area, surrounded by a few stones and twigs. The cactus is a vibrant green color, with spines and ridges that give it a unique texture. The stones are a mix of different sizes and colors, ranging from light grey to dark grey. The twigs are a light brown color and are scattered around the cactus, adding texture and contrast to the otherwise rocky landscape.