Operation Tracer - Stay Behind Cave (1997) Documentary


Lantern Swinger
The documentary Operation Tracer - Stay Behind Cave (1997), shows how the Gibraltar Caving Group discovered the cave which many others had tried to find before. In the event of Gibraltar being captured by German forces, six men would have been sealed into a secret chamber in which they would have been expected to survive and observe the activities of the Germans for a period of one year or more. Rumours about a secret chamber in Gibraltar had persisted since the war and many people devoted considerable amounts of their time to exploring Gibraltar's existing tunnels, caves and sheer cliffs in the hope of finding it.

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