Sellier, a former prisoner at Dora tells the story of this slave labor camp that secretly manufactured V-2 rockets under the technical supervision of the SS member Wernher von Braun. He has utilized not only available documents but the unpublished testimony of several dozen fellow prisoners. The lack of informatiom about the Dora Tunnel was concealed as much by the Americans as by the Soviets, who in their duel for the missile technology, each inherited members of the Peenemunde research team