Many feet below the surface staring at the blast lock doors inside a Titan I Intercontinental Ballistic Missile site in California.
100 feet below the surface, inside a pitch dark Titan I ICBM Missile Silo, looking through a blast lock door.
These doors protected the complex from an explosion inside the silo or an attack on the silo. Each of the silos was separated from the complex by 2 blast lock doors. You can see the second set in the background of this image.
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.