Scientists now have a clearer picture of Camp Century, an abandoned U.S. military base long hidden under the ice in Greenland, thanks to a NASA research team's good luck.

NASA scientists have found the remains of a U.S. military base buried 100 feet below the surface of the ice in Greenland. Camp Century, as it was called, was a Cold War-era satellite for the U.S. Army used as a front for a planned arsenal of nuclear missiles.

While scanning the frozen surface of northwestern Greenland this year, NASA scientists stumbled across a "city under the ice" from the paranoid years of the Cold War. The structure was Camp Century, an abandoned Arctic military research base run by the US between 1959 and 1967 during the Cold War.