Trinity was the name of the first atomic bomb test, on July 16, 1945, in a desolate desert valley in NewMexico near Alamogordo. The explosion turned a large expanse of desert ground into glass.

Links

• http://www.alamogordo.com/trinity.html
• Trinitite is glassy material that was formed in the aftermath of the world's first atomic explosion. It has a comforting glow of residual induced radiation. http://geology.about.com/library/bl/images/bltrinitite.htm