Norway's proximity to the USSR in the Cold War led to it building many military bunkers – some of them vast secret bases.

the Cold War. One side was led by the USA, the other by the Soviet Union - the two superpowers. The Soviet Union led one side with other Eastern European countries such as Hungary and Poland ...

One by one, Communist governments loyal to Moscow seized power in Poland, Hungary, Romania, and Bulgaria. Soviet Communism soon dominated Eastern Europe. The Cold War had begun.