Photo taken on Oct. 31, 2016 shows the model of the first Soviet nuclear bomb RDS-1 at the museum "Bunker-42" in Moscow, Russia. "Bunker-42" is an underground Soviet military headquarters remade into a museum. The facility over 7000 square meters located at a depth of 65 meters in the center of Moscow.(Xinhua/Evgeny Sinitsyn)
Photo taken on Oct. 31, 2016 shows the hallway at the museum "Bunker-42" in Moscow, Russia. "Bunker-42" is an underground Soviet military headquarters remade into a museum. The facility over 7000 square meters located at a depth of 65 meters in the center of Moscow.(Xinhua/Evgeny Sinitsyn)
