This video is a black and white footage of a nuclear explosion. The video starts with a close-up of the explosion, showing a bright light and smoke. As the video progresses, the camera zooms out to show the explosion from a distance, with smoke billowing upwards and spreading outwards. The explosion is massive, with a large mushroom cloud forming above the blast site. The smoke is thick and dark, contrasting with the lighter sky in the background. The video captures the scale and intensity of the explosion, with the smoke expanding rapidly and the sound of the blast likely to be heard.