project gnome

Inside an underground nuclear explosion created cavity, 1961.

Lawrence Livermore National Laboratory’s Project Gnome, the first nuclear Plowshare experiment, was designed to explore the feasibility of using a deeply buried explosion in a dry salt bed for energy recovery and scientific nuclear experiments. The 3.1-kiloton device was detonated at a depth of 360 meters near Carlsbad, New Mexico. A researcher explores the created cavity, 23 meters high with a diameter of 49 meters.

photo: llnl/flickr