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.

The discovery occurred while the NASA team was testing the Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) system aboard a Gulfstream III aircraft.

The U.S. Army chose frigid, remote Greenland for a secretive Cold War project code-named "Iceworm." Years later, NASA detected the project's buried base, called Camp Century, deep beneath the accumulating ice. A space agency research plane swooped over the remote Arctic region this year, using an advanced radar to scan the changing ice sheet below.