Agents of the Dead Drop network recently installed the latest node of their offline peer to peer file-sharing network at the highest point of the Teufelsberg in Berlin, a former U.S. NSA "listening" station that was featured in this documentary. Writes Adam Barthol, the Dead Drop creator: “The dead drop currently contains confidential cold war material – Do NOT put it on the internet.”Below, a handy map of all the world’s Dead Drops.