Or more known as the V3 complex. This complex was built to host another of Hitlers V-weapons called "Hochdruckpumpe" . Read more about the Hochdruckpumpe.

Entrance to the complex.

Mårten standing at the begining of 2500ft tunnel.

Me, trying to get a souvenir.

The canon. 25 of these was suppose to fire against London.

One of the B-24 pilots was Joseph Kennedy, brother of John F Kennedy. He died during the attack of this complex August 12, 1944.

If you would like to visit the place, you can find a map here