The image shows a dark tunnel with a large rock formation in the center. The rock formation appears to be old and weathered, with patches of green moss and lichen growing on it. On the right side of the image, there is a small white sign with black text that reads "Warning" and a yellow marker. The tunnel is dimly lit, with only a few spotlights visible. The walls of the tunnel are made of concrete and there are pipes running along the sides.