Check Yamantau mountain (theres a massive underground city superhardened against nuclear strikes and its the largest underground city ever ) also there are 27 underground cities with 3 (according to the military magazine Oganok-check oganok report 1993) .Most were constructed in the soviet era
Mount Yamantaw (Russian: гора Ямантау) is in the Ural Mountains, Bashkortostan, Russia. The name means evil mountain in the Bashkir language. It is also known as Mount Yamantau. It stands at 1,640 metres (5,381 ft) and is the highest mountain in the southern Urals. Along with Mount Kosvinsky (600 km to the north), it is suspected by the United States of being a large secret nuclear facility and/or bunker.[1] The closed military town of Mezhgorye (Russian: Межгорье) is situated nearby. As late as 2003, Yamantaw was not yet fully operational.[1]
Large excavation projects have been observed by U.S. satellite imagery as recently as the late 1990s, during the time of Boris Yeltsin's pro-Western government after the fall of the Soviet Union.[1] Two garrisons, Beloretsk-15 and Beloretsk-16, were built on top of the facility, and possibly a third, Alkino-2, as well, and became the closed town of Mezhgorye in 1995. They are said to house 30,000 workers each. Repeated U.S. questions have yielded twelve different responses from the Russian government regarding Mount Yamantaw[citation needed]. They have said it is a mining site, a repository for Russian treasures, a food storage area, and a bunker for leaders in case of nuclear war.[2] Responding to questions regarding Yamantaw in 1996, Russia's Defense Ministry stated: "The practice does not exist in the Defense Ministry of Russia of informing foreign mass media about facilities, whatever they are, that are under construction in the interests of strengthening the security of Russia."[2]
The facility is designed to withstand up to six direct thermonuclear hits in the event of an attack[citation needed]. Large rail lines run into and out of the mountain[citation needed]. It is rumored that a direct private subway line from Moscow has been constructed to Mount Yamantaw, for the transportation of government officials and others who would be useful in a post-nuclear environment, such as nuclear scientists[citation needed]. This line would be over 800 mi long. In the event of nuclear war, scientists at Mount Yamantaw would be able to construct and launch new nuclear weapons, a key part[citation needed] of the former Soviet Union's nuclear strategy.
Mount Yamantaw is near one of Russia's last remaining nuclear labs, Chelyabinsk-70, raising speculation that it already houses nuclear weapons. Russian newspapers reported in 1996 that it is a part of the "Dead Hand" nuclear retaliatory command structure. Some U.S. intelligence sources say Mount Yamantaw is only one of 200 secret Russian nuclear bases upgraded over the past six years.[citation needed]
On a visit to Russia, former U.S. Congressman Curt Weldon (R-PA), who had been following the story since 1995, asked about the mountain. "I went to Moscow and spoke with the deputy interior minister who was in charge of mining," Weldon said. "I asked him if there was any mining activity there. He just shook his head and said he had never heard of it. So I mentioned the other name the Russians use for it: Mezhgorye. He said he hadn't heard of that either. Then he sent an aide out to check. Twenty minutes later, the aide came back, visibly shaken. He said they couldn't say anything about it."
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