An aerial photo of the area six seconds after the Huron King nuclear underground test detonation. The Huron King test chamber is clearly seen near the center of the photo. It was towed out of the crater area before the ground collapsed.
via www.fas.org

An aerial photo of the area six seconds after the Huron King nuclear underground test detonation. The Huron King test chamber is clearly seen near the center of the photo. It was towed out of the crater area before the ground collapsed.

via www.fas.org