To me, these types of images are really fun to create. This space was pitch dark, so to get this shot, I set up an LED panel at the camera, shining towards the blast doors to get a composition. Once the framing was set, I took a LED panel and placed it beneath the walkway on the right. I also placed a panel behind the ajar door. Lastly, during the exposure, I light painted the circular section of the tunnel, near the camera, with a flashlight.