Two heavy doors protect a tunnel inside a former Swiss mlitary command bunker near Attinghausen

Two heavy doors protect a tunnel inside a former Swiss mlitary command bunker near Attinghausen

Two heavy doors protect a tunnel inside a former Swiss mlitary command bunker near Attinghausen, Switzerland September 2, 2015. Deltalis data centre offers high security storage of data in server rooms inside of the former command bunker, which was built in 1948. Picture taken on September 2, 2015. REUTERS/Arnd Wiegmann

December 8, 2016 2:14 PM (UTC+8)