The image shows a long, narrow tunnel made of brick walls. The walls are made of red bricks and appear to be old and weathered. The ceiling is arched and the floor is made of concrete. On the right side of the image, there are several rows of small windows that are partially covered by the bricks. The windows are arranged in a grid-like pattern and are slightly recessed into the wall. The overall atmosphere of the tunnel is dark and gloomy.