Novaya Zemlya

Also spelled Novaja Zemlja ("New Land" in english). It is an island located in the Far North East in Europe.

During the Cold War it was a site for several Soviet Nuclear Tests. Including the "Tsar Bomb" The most powerful nuclear bomb ever tested.

Over its entire history as a nuclear test site, Novaya Zemlya hosted 224 nuclear detonations with a total explosive energy equivalent to 265 megatons of TNT. (Compare that with all explosives including the atomic weapons used in World War 2 amounted to only two megatons)