Inside Putin's ultra-secret doomsday bunker that guarantees 'mutual destruction' if West attacks

Key Points:

• Russian President Vladimir Putin has been secretly upgrading Facility 1335, a Cold War-era nuclear command bunker deep inside Kosvinsky Kamen mountain in the Urals, designed to withstand American bunker-buster bombs and ensure mutually assured destruction.
• The Kremlin has been modernizing the site since 2018, with procurement contracts for large quantities of steel, cement, electrical cables, ventilation units, and heavy machinery indicating extensive renovations and expansions.
• Facility 1335, part of the Perimeter or "Dead Hand" system, is buried under over 1,000 feet of granite and contains at least 24 underground rooms connected by 1.5 miles of tunnels, making it highly protected against nuclear attacks.
• Upgrades include new blast-resistant equipment, communication systems, and ventilation units designed to filter radioactive dust, with satellite images showing ongoing construction and new entrances being built between 2022 and 2025.
• Experts suggest the refurbishment aligns with Russia’s broader nuclear force modernization and reflects heightened geopolitical tensions, as Moscow prioritizes its nuclear deterrent amid perceived conflicts with the West.