A Cold War-era nuclear bunker located in western Poland, near the town of Chojna. This site is part of a network of clandestine military installations constructed during the Cold War period, when Poland was under communist rule as part of the Eastern Bloc. These bunkers were built to house nuclear warheads and other military assets, representing a significant but largely hidden aspect of Poland's Cold War military infrastructure.
The bunker's existence was kept secret from the Polish public during its operational years.