Defense

Take a look inside Skynet's 50-year-old blast-proof bunker: New pictures give rare glimpse inside the real-life secret underground military complex made famous by the Terminator film

It has starred as the home of Skynet in the Terminator series, stopped a nuclear attack in the movie War Games, and even appears in everything from Interstellar to Stargate.

Now, new pictures reveal the interior of the secretive military complex and NORAD Combat Operations Center hidden 2,000 feet below the surface of the Cheyenne Mountains.

It's been 50 years since the facility opened its doors to the US Air Force facility, and now the 23-ton blast doors have been opened again. 

The massive underground fortress is a short distance from NORAD and UNSORTHCOM headquarters at Peterson Air Force Base in Colorado Springs, Colorado deep with in the 9,000 foot tall granite mountain.

Plans for the complex began around the late 1950s, as a Cold War defensive strategy against Soviet bombers, ballistic missiles and the possible nuclear attack.

And the mountain's shielding allows the military to stay in contact with satellites, regardless if everyone is completely sealed inside and underground – making it a perfect location to gather intelligence.

The total cost was $142.4 million and the doors first opened February 6, 1967.