The site, formerly known as the Nevada Test Site until 2010 ... The 1,280-feet wide Sedan Crater was created by the Sedan detonation in 1962 as part of the Plowshare Program.
Across an expanse of the Nevada desert, in the center of the state, lies a volcanic crater reaching 3,280 feet in width and 427 feet in depth. It is now extinct — its last-known eruption ...